JP2013120161A - Automatic analyzer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic analyzer for improving analysis efficiency by enabling a reduction in the number of times of calibration and accuracy management sample measurements as well as the uniformity of the degrees of deterioration of reagent containers even when a plurality of reagent containers of the same measurement item are installed in a reagent disk.SOLUTION: An input part 53 sets a plurality of reagent containers of the same item as a reagent container group when the plurality of reagent containers of the same analysis item are present in a reagent disk. A determination part 56 determines whether differences of residual quantities of reagent stored in the reagent containers included in the reagent container group are within a constant range. A control part 52 first uses a reagent container storing a large quantity of reagent when the determination part determines that the differences are not within the constant range. The control part 52 also sequentially uses the reagent containers in the reagent container group on the basis of the preliminarily set number of times when the determination part determines that the differences of residual reagent quantities stored in the reagent containers included in the reagent container group are not within the constant range.

Description

  The present invention relates to an automatic analyzer, and in particular, an automatic analysis having a reagent container storage mechanism capable of installing a plurality of reagent containers, and including a plurality of reagent containers containing the same type of reagent in the reagent container storage mechanism. Relates to the device.

  In general, automatic analyzers for clinical examinations add a reagent to a sample such as blood or urine and measure it. In such an automatic analyzer, a reagent necessary for measurement is generally prepared for each analysis item to be measured, and installed in a reagent container storage mechanism in the apparatus before the measurement. In an automatic analyzer that cannot replenish the reagent container in the reagent container storage mechanism during analysis, multiple reagents of the same item are installed so that there is no shortage of reagents used during analysis, and there is no remaining reagent in one reagent container An automatic analyzer having a function of using the reagent in the next reagent container is common.

  In addition, the reagent installed in the automatic analyzer is in an open state for dispensing of the reagent from the reagent container by the reagent dispensing mechanism, and the reagent in the reagent container is gradually removed by contact with air or evaporation of the reagent. It is known to deteriorate. In order to avoid the abnormal measurement data due to the deterioration of the reagent, the state of the reagent container is monitored by periodically measuring a calibration and quality control sample.

  In an automatic analyzer having many analysis items and reagent containers, such calibration and measurement of a quality control sample are complicated. For this reason, in the conventional technique, in order to perform calibration or quality control accurately, calibration is required. 2. Description of the Related Art An automatic analyzer having a function capable of setting the effective time of a line for each inspection item is known (for example, see Patent Document 1). There is also known an automatic analyzer having a function of avoiding abnormality in the measurement result by instructing reagent calibration based on the measurement result of the quality control sample (for example, see Patent Document 2).

JP-A-10-339732 JP 2009-36515 A

  In the conventional automatic analyzer, when a plurality of reagents of the same item are installed in the reagent container storage mechanism, the measurement is performed until the remaining amount of one reagent container becomes 0, and then the reagent in the next reagent container It is common to start using. For example, if 300 tests can be performed in one reagent container, 300 reagents are used from the first reagent container, and when the remaining amount becomes 0, the second reagent containing the same type of reagent is then stored. Dispense 300 times from the reagent container and use.

  In such a case, the reagent used earlier deteriorates due to contact with the reagent suction mechanism or contact with air due to a decrease in the remaining amount. Moreover, even if it is an unused reagent, since all the reagent containers are opened in the reagent container storage mechanism, the deterioration of the reagent proceeds.

  Here, in the automatic analyzers described in Patent Document 1 and Patent Document 2, the degree of deterioration of an unused reagent container is grasped by measuring a calibration or quality control sample in advance.

  However, in such a calibration or quality control sample measurement method, if the calibration or quality control sample is not performed in an unused reagent container, the degree of deterioration in the unused reagent container is grasped. There was a problem that measurement results could not be guaranteed. Even when calibration and quality control samples are performed on unused reagent containers, if there are many unused reagent containers, the cost increases due to an increase in the number of calibration and quality control sample measurements. It was an issue.

  Depending on the type of reagent, there are a reagent that easily deteriorates and a reagent that does not easily deteriorate. In the case of a reagent that easily deteriorates, it is necessary to perform calibration and measurement of a quality control sample at a timing that deteriorates to some extent. Here, as described above, when the reagent for 300 times is continuously used from the first reagent container until the remaining amount of the first reagent container becomes 0, during the analysis using the first reagent, Calibration is required. Although the frequency of calibration depends on the deterioration of the reagent, for example, if the reagent is used 50 times, for example, in the case of an analysis item performed 300 times a day, the morning analysis starts within one day In addition to hour calibration, five calibrations are required during daytime analysis. Since general analysis cannot be performed during calibration, there arises a problem that analysis efficiency decreases.

  An object of the present invention is to make the degree of deterioration of a reagent container uniform even when a plurality of reagent containers of the same measurement item are installed in a reagent container storage mechanism, and to reduce the number of times of calibration and quality control sample measurement. An object of the present invention is to provide an automatic analyzer that can improve the analysis efficiency.

(1) To achieve the above object, the present invention provides a reagent container for storing a reagent, a reagent disk for storing a plurality of reagent containers, a reagent dispensing mechanism for dispensing a reagent from a reagent container, and the reagent An automatic analyzer having a disc and a controller for controlling the reagent dispensing mechanism, and when there are a plurality of reagent containers of the same analysis item in the reagent disc, Difference between the input unit set as the container group, the storage unit in which the set reagent container group is registered, and the remaining amount of the reagent stored in the reagent container included in the reagent container group stored in the storage unit And a control unit that determines whether or not the difference in the remaining amount of the reagent stored in the reagent container included in the reagent container group is not within a predetermined value. Is a reagent container with a large amount of reagent remaining When the determination unit determines that the difference in the remaining amount of the reagent stored in the reagent container included in the reagent container group is not within a certain range, the control unit is set in advance. The reagent containers in the reagent container group are sequentially used based on the number of times.
With this configuration, even when multiple reagent containers of the same measurement item are installed in the reagent container storage mechanism, the degree of deterioration of the reagent containers is made uniform, and the number of calibration and quality control sample measurements is reduced. Analysis efficiency.

  (2) In the above (1), it is preferable that the control unit starts using the reagent container from the earliest registration time for the reagent container group for a plurality of reagent containers of the same item in the reagent disk. It is a thing.

  (3) In the above (1), preferably, the control unit uses a reagent container group for a plurality of reagent containers of the same item in the reagent disk from the already used reagent containers. Is.

  (4) In the above (1), preferably, the control unit displays the results of calibration performed on one reagent container in the same reagent container group and the measurement result of the quality control sample in the other reagent container group. This is also applied to the reagent container.

According to the present invention, even when a plurality of reagent containers of the same measurement item are installed in the reagent container storage mechanism, the degree of deterioration of the reagent container is made uniform, and the number of times of calibration and quality control sample measurement is reduced. This can improve the analysis efficiency.

1 is a block diagram showing an overall configuration of an automatic analyzer according to an embodiment of the present invention. It is explanatory drawing of an example of the display screen in the automatic analyzer by one Embodiment of this invention. It is a flowchart which shows the usage method of the reagent container in the automatic analyzer by one Embodiment of this invention. It is a flowchart which shows other of the usage method of the reagent container in the automatic analyzer by one Embodiment of this invention. It is a flowchart which shows the other of the usage method of the reagent container in the automatic analyzer by one Embodiment of this invention.

Hereinafter, the configuration and operation of an automatic analyzer according to an embodiment of the present invention will be described with reference to FIGS.
First, the overall configuration of an automatic analyzer according to an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a block diagram showing the overall configuration of an automatic analyzer according to an embodiment of the present invention.

  The automatic analyzer according to this embodiment includes an analysis system 10 and a control system 50. The analysis system 10 includes a sample disk 12, a sample pipetting mechanism 13, reagent disks 19 and 21, a reaction disk 15, reagent pipetting mechanisms 17 and 20, a photometer 16, and a reaction container cleaning mechanism 23. Prepare.

  The sample disk 12 is a sample moving device that holds a plurality of sample containers 11 and moves each sample container so as to be positioned at the sample aspirating position. The sample pipetting mechanism 13 dispenses the sample from the sample container 11 to the reaction container 14. The reagent disks 19 and 21 are a reagent moving device that holds a plurality of reagent containers according to analysis items and moves the reagent containers so as to be positioned at the reagent suction position, and is also a reagent container storage mechanism. Some of the reagent containers held on the reagent disks 19 and 21 hold the same type of reagent. This is for avoiding a shortage of reagents during analysis because analysis items with a high analysis frequency consume much reagent.

  The reaction disk 15 functions as a reaction line in which a plurality of reaction vessels 14 are annularly arranged. The reagent pipetting mechanisms 17 and 20 dispense the reagent into the reaction container 14 from the reagent containers held on the reagent disks 19 and 21. The photometer 16 measures the absorbance of the reaction solution in the reaction vessel 14. The reaction container cleaning mechanism 23 is attached along the reaction disk 15 to clean the reaction container 14.

  The control unit 52 performs operation control and screen display control of each mechanical system of the analysis system 10.

  Next, the analysis operation at the time of colorimetric analysis measurement by the automatic analyzer of the present embodiment will be described. When the analysis operation is started, cleaning of the reaction container 14 is started by the reaction container cleaning mechanism 23, and the water blank is measured simultaneously with the cleaning in the reaction container 14. This measured value of the water blank serves as a reference for the absorbance measured thereafter in the reaction vessel 14. When the cleaning is completed, the sample disk 12 moves, the sample container advances to the sample dispensing position, and the sample pipetting mechanism 13 sucks a predetermined amount of sample from the sample container and dispenses it into the reaction container 14.

  Next, the reaction container 14 moves to the reagent dispensing position, and the two reagent disks 17 and 20 move so that the corresponding analysis item reagents 18 and 21 are positioned at the reagent suction position.

  Next, the reagent pipetting mechanism 17 starts operation, and the reagent installed on the reagent disk 19 is aspirated.

  Next, the reagent pipetting mechanism 17 moves to the corresponding reaction container 14 on the reaction disk 15 and discharges a predetermined amount of the reagent that has been sucked and held, and then the reagent pipetting mechanism 17 is moved to a cleaning mechanism (not shown). To prepare for the next reagent dispensing. After the reagent is dispensed by the reagent pipetting mechanism 17, measurement by the photometer 16 is started. Photometry is performed when the reaction vessel 14 crosses the light beam while the reaction disk 15 is rotating. Next, the reagent is added to the reaction vessel 14 by the reagent pipetting mechanism 20 in the same manner as the reagent pipetting mechanism 17. As the reaction disk 19 rotates, the reaction vessel 14 crosses the light flux one after another, and the absorbance of each reaction solution is measured each time. After completion of the measurement, the reaction vessel 14 is washed by the reaction vessel washing mechanism 23 to prepare for the next sample measurement. The concentration or enzyme activity value is converted from the measured absorbance and the analysis result is displayed on the display unit 55.

  The control system 50 includes a control unit 52, an input unit 53 for inputting information, a storage unit 54 for storing the information, a display unit 55 for displaying measurement data, and a determination unit 56 for determining the result of the measurement data. The analysis unit is controlled via 51.

  The reagent for each analysis item filled in the reagent containers 18 and 21 is requested to be calibrated via the interface 51, and a calibration curve is created by measuring a sample with a known concentration on the sample disk 12 as a standard sample. Similarly, the apparatus can be managed by measuring a sample having a known concentration on the specimen disk 12 as a quality control sample.

Next, an example of a display screen in the automatic analyzer according to the embodiment of the present invention will be described with reference to FIG.
FIG. 2 is an explanatory diagram showing an example of a display screen in the automatic analyzer according to the embodiment of the present invention.

  FIG. 2 shows an example of a screen for setting / displaying the reagent container group in the analysis item. Here, the setting method of the reagent container group at the time of implementation of this invention is demonstrated using FIG.

  In FIG. 2, as an example, it is shown that a reagent container group is set and displayed for two types of analysis items X and Y. Unlike the analysis item X, the reagent container group does not have to be one for each item, and in the example of the first row, three reagent containers A, B, and C are provided for the analysis item X. ing. For the same analysis item X, four reagent containers D, E, F, and G are provided. For the analysis item Y, four reagent containers H, I, J, and K are provided.

  A plurality of reagent registration times or reagent lots displayed in FIG. 2 can be set.

  Further, the number of repeated measurements displayed in FIG. 2 can be arbitrarily set by the user for each reagent container group.

  The reagent container group setting method may be such that the reagent container group may be automatically determined according to the reagent registration time and the reagent lot, and the user sets the reagent container as the reagent container group as shown in FIG. A method that can be set from Furthermore, the range of the reagent registration time displayed in FIG. 2 is preferably provided with a plurality of ranges such as a day unit or a time unit.

  The screen shown in FIG. 2 is displayed on the display unit 55 of FIG. 1, and the displayed numerical values can be input at the input unit 53. The display values are stored in the storage unit 54. And used for controlling the analysis system 10 via the interface 51.

Next, a method for using the reagent container in the automatic analyzer according to the embodiment of the present invention will be described with reference to FIG.
FIG. 3 is a flowchart showing a method of using the reagent container in the automatic analyzer according to the embodiment of the present invention.

  FIG. 3 shows a case where three reagent containers (A, B, C) of the same lot of the analysis item X are stored in the reagent disk 22 of FIG. 1, as illustrated in the top row of FIG. The usage method of a reagent container is shown.

  In step s001, the operator performs reagent registration using the input unit 53 of FIG. 1, and reagent containers A, B, and C of the analysis item X are individually registered in the storage unit 54.

  Next, in step s002, since the reagent containers A, B, and C are related to the same analysis item X, the control unit 52 sets the reagent container group of the analysis item X for these. Each setting item shown in FIG. 2 may be arbitrarily set by the operator, or when the reagent registration is completed, various information is stored in advance in the storage unit 54 for each analysis item, thereby allowing the reagent to be set. It may be set and displayed automatically upon completion of registration.

  Next, in step s003, the control unit 52 executes calibration for the reagent containers A, B, and C, and the reagent is ready for use.

  Next, in step s004, the control unit 52 compares the remaining amounts of the reagent containers in the reagent container group. This is because the reagent containers in the reagent container group are not always fixed due to the stop of the apparatus or the like. Then, the determination unit 56 determines whether or not the remaining amount of each reagent container in the reagent container group is within a certain difference.

  In step s004, when the remaining amount of each reagent container in the reagent container group is within a certain difference, in step s005, the control unit 52 sets the number of times the reagent containers in the reagent container group are set in step s002. Use in order. For example, since the set number of times for the reagent containers A, B, and C of the analysis item X is 100, after dispensing the reagent for 100 times from the reagent container A, the reagent for 100 times is then dispensed from the reagent container B. Next, 100 times of the reagent is dispensed from the reagent container C. Next, 100 times of the reagent is dispensed from the reagent container A again. Here, the order in which the reagent containers A, B, and C are used may be the order of the reagent registration date, or the order in which the numbers listed in the reagent disk are in ascending order.

  On the other hand, if it is determined in step s004 that there is a difference of a certain number or more in the remaining amount of the reagent containers in the reagent container group, in step s006, the control unit 52 determines that the remaining amount of the reagent containers is large. Use the next reagent container when the remaining amount of the reagent container reaches the same amount as the reagent container with the smallest amount. In step s006, when the remaining amount of the reagent containers in the reagent container group becomes the same amount, the usage order of the reagent containers is used for the measurement in the order of step s005.

  In step s005, when all of the reagent containers A, B, and C are used for the set number of times in step s002, the determination unit 56 next determines the reagent containers A, B, and C in step s007. Determine the remaining amount. If the result of determination is that the remaining amount of the reagent container is equal to or greater than the set number of times, the apparatus repeats step s005 again. On the other hand, as a result of the determination, if the remaining amount of the reagent container is equal to or less than the set number of times, in step s008, the control unit 52 uses the reagent until the remaining amount of each reagent container becomes 0, and the remaining amount is When the time reaches 0, the use of the reagent container is stopped, and the use of this reagent container group is finished.

  In the above description, in step s006, if it is determined that there is a difference of a certain number or more in the remaining amount of the reagent containers in the reagent container group, the remaining reagent containers are used from the one having the larger remaining amount. Accordingly, since the remaining amount of the reagent can be made substantially equal to or less than a predetermined value that is a determination value, the degree of deterioration of the reagent can be made uniform.

  In addition, as shown in FIG. 2, the number of repetitions of the reagents A, B, C, D, E, F, and G of the analysis item X is 100, whereas the reagents H, I, and The number of repetitions of J and K is reduced to 50 times. Here, the reagents A, B, C, D, E, F, and G are reagents that are not easily deteriorated, and the reagents H, I, J, and K of the analysis item Y are easily deteriorated, and are easily deteriorated. The number of repetitions of H, I, J, and K is set to be smaller than the number of repetitions of reagents A, B, C, D, E, F, and G, which are not easily deteriorated. In addition, 50 times, which is the number of times the reagents H, I, J, and K of the analysis item Y are repeated, matches the frequency of calibration. That is, since the reagents H, I, J, and K are easily deteriorated, calibration is required more frequently than reagents that are not easily deteriorated. For example, if the calibration of the reagents H, I, J, and K needs to be performed every 50 times, the number of repetitions of the reagents H, I, J, and K of the analysis item Y is 50. .

  In this way, calibration of all reagents (including reagents H, I, J, and K) is performed every morning before using the automatic analyzer. Thereafter, the analysis is started. Here, the analysis item Y will be described assuming that 200 tests are requested per day. For the analysis item Y, according to step s005 of FIG. 3, the reagent containers H, I, J, and K of the analysis item Y are set to 50 times, so the reagent was dispensed 50 times from the reagent container H. After that, the reagent is dispensed 50 times from the reagent container I, then the reagent is dispensed 50 times from the reagent container J, and then the reagent is dispensed 50 times from the reagent container K. The analysis of the day ends. In this case, the calibration is only performed once in the early morning before the start of analysis.

  On the other hand, a case will be described in which reagents for 300 tests are held in one reagent container and reagent dispensing is continuously performed until one container is empty as in the prior art. In this case as well, calibration of all reagents (including reagents H, I, J, and K) is performed every morning before using the automatic analyzer. Thereafter, the analysis is started. For analysis item Y, 200 times of 200 tests are continuously dispensed from reagent container H, but when 50 times of reagent dispensing is completed, other analysis during the day is performed due to reagent deterioration. It is necessary to calibrate the reagent in the reagent container H regardless of the time zone. Since calibration is required for every 50 dispensings, the conventional method requires four calibrations during the day. During calibration, the analysis is interrupted and the efficiency of the analysis is degraded. On the other hand, in the system of the above-described embodiment, since the dispensing is performed from other reagent containers of the same analysis item before the calibration is necessary, the calibration is not necessary and the analysis efficiency can be improved.

Next, another example of the method for using the reagent container in the automatic analyzer according to the embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a flowchart showing another method of using the reagent container in the automatic analyzer according to the embodiment of the present invention.

  Here, although the analysis items are the same, a method of determining the use order of the reagent container groups when there are a plurality of reagent container groups will be described.

  In FIG. 2, a group of reagents A, B, and C and a group of D, E, F, and G having different reagent registration times for the analysis item X are set. FIG. 4 shows a method of determining the reagent use priority when there is an analysis item having a plurality of reagent registration times.

  When there are a plurality of reagent container groups for one analysis item, the determination unit 56 starts determining the order of reagent use when analysis is started (step s101). First, as a first condition for determination, the presence or absence of a reagent container group used for measurement is determined for a plurality of reagent container groups of the same item (step s102). As a result of the determination, when there is a reagent container group already used for measurement, the use priority of the reagent is set first (step s103). Next, in step s104, the reagent registration time is determined. If there is a difference in the reagent registration time, the priority is increased from the group with the earlier reagent registration time (step s105). In addition, when there are a plurality of reagent container groups having no difference in reagent registration time, the total number of analyzes is determined, and the priority order is set higher from the reagent container group having the large total number of analyzes (step s106). Determine priorities within unused groups.

  In step s106, increasing the priority order from the reagent container group having a large total number of analyzes is as follows. In the example shown in FIG. 2, the reagents A, B, and C of the measurement item X and the reagents D, E, F, and G of the same measurement item X have different reagent registration times. Early reagents A, B, C are preferentially used. However, here, it is assumed that the reagents A, B, and C of the measurement item X and the reagents D, E, F, and G of the same measurement item X have the same reagent registration time. In addition, it is assumed that the reagent A, B, C, D, E, F, and G have the same volume of reagent (for example, 300 tests in one container). Then, the number that can be analyzed with the reagents A, B, and C of the measurement item X, that is, the total number of analyzes is 900 tests, and the number that can be analyzed with the reagents D, E, F, and G of the same measurement item X, that is, Since the total number of analyzes is 1200 tests, reagents D, E, F, and G are preferentially used in step s106.

Next, another example of the method of using the reagent container in the automatic analyzer according to the embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a flowchart showing another method of using the reagent container in the automatic analyzer according to the embodiment of the present invention.

  In this embodiment, since the frequency of use of each reagent container in the reagent container group is uniform, in FIG. 5, the measurement results of the calibration and quality control sample measured in one reagent container are applied to other reagent containers. Like to do.

  First, calibration is performed on one reagent container in a certain reagent container group (step s201).

  Next, when the calibration measurement is completed, the determination unit 56 determines whether or not the calibration is successful (step s202). Here, if the calibration result is outside the preset range, it is determined that the calibration has failed. When the calibration fails, the result of the calibration is not applied to the other reagent containers in the reagent container group (step s203).

  When it is determined in step s202 that the calibration is successful, the determination unit 56 compares the remaining amount of the reagent container that has been calibrated next with another reagent container in the same reagent container group ( Step s204). Here, if the remaining amount of the calibrated reagent and the other reagent container is within a certain difference, the apparatus applies the calibration result to the other reagent container (step s205). On the other hand, if it is determined that there is a difference in the remaining amount between the reagent container that has been calibrated and the remaining reagent container as a result of the remaining amount comparison, the calibration result is not applied to the other reagent container (step s206). .

  The flow may be applied not only to the calibration result but also to the measurement result of the quality control sample.

  In this way, the calibration and control measurement results of one reagent container in each reagent container group are applied to other reagent containers, thereby reducing the number of calibration and control measurements and reducing costs. be able to.

As described above, according to this embodiment, even when reagent containers of the same item are installed on a plurality of apparatuses, the state of the reagent can be kept constant, and the number of times of calibration and quality control sample measurement can be maintained. By reducing the cost, the cost can be reduced. Moreover, the analysis efficiency can be improved.

DESCRIPTION OF SYMBOLS 10 ... Analytical system 11 ... Sample container 12 ... Sample disk 13 ... Sample pipetting mechanism 14 ... Reaction container 15 ... Reaction disk 17, 20 ... Reagent pipetting mechanism 19, 21 ... Reagent disk 16 ... Photometer 23 ... Reaction container washing mechanism DESCRIPTION OF SYMBOLS 50 ... Control system 51 ... Interface 52 ... Control part 53 ... Input part 54 ... Storage part 55 ... Display part 56 ... Determination part

Claims (4)

A reagent container for storing a reagent; a reagent disk for storing a plurality of reagent containers; a reagent dispensing mechanism for dispensing a reagent from the reagent container; and a control unit for controlling the reagent disk and the reagent dispensing mechanism. An automatic analyzer,
When there are a plurality of reagent containers of the same analysis item in the reagent disk, an input unit for setting a plurality of reagent containers of the same item as a reagent container group;
A storage unit in which the set reagent container group is registered;
A determination unit that determines whether or not a difference in the remaining amount of the reagent stored in the reagent container included in the reagent container group stored in the storage unit is within a certain range,
When the determination unit determines that the difference in the remaining amount of the reagent stored in the reagent container included in the reagent container group is not within a certain range, the control unit uses the reagent container with a large reagent remaining amount. ,
In addition, when the determination unit determines that the difference in the remaining amount of the reagent stored in the reagent container included in the reagent container group is not within a certain range, the control unit determines the reagent based on the preset number of times. An automatic analyzer characterized by sequentially using reagent containers in a container group. The automatic analyzer according to claim 1, wherein
The automatic analyzer according to claim 1, wherein the control unit is used for reagent container groups corresponding to a plurality of reagent containers of the same item in a reagent disk, with the reagent container being installed at the earliest registration time. The automatic analyzer according to claim 1, wherein
The automatic analysis apparatus is characterized in that the control unit is used from a reagent container already used for a reagent container group for a plurality of reagent containers of the same item in a reagent disk. The automatic analyzer according to claim 1, wherein
The control unit applies the calibration result performed on one reagent container in the same reagent container group and the measurement result of the quality control sample to other reagent containers in the same reagent container group. An automatic analyzer.

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