JP2009243955A - Method for measuring concentration of marker related to blood coagulation - Google Patents

Method for measuring concentration of marker related to blood coagulation Download PDF

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JP2009243955A
JP2009243955A JP2008088220A JP2008088220A JP2009243955A JP 2009243955 A JP2009243955 A JP 2009243955A JP 2008088220 A JP2008088220 A JP 2008088220A JP 2008088220 A JP2008088220 A JP 2008088220A JP 2009243955 A JP2009243955 A JP 2009243955A
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blood
coagulation
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blood coagulation
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Toshiki Kawabe
俊樹 川辺
Hironobu Isogawa
浩信 五十川
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for measuring the concentration of a marker related to blood coagulation that can more accurately obtain the concentration of a marker related to blood coagulation. <P>SOLUTION: The method for measuring the concentration of a marker related to blood coagulation, by using blood specimens collected into blood collection tubes for blood cell testing and for blood coagulation testing comprises: measuring, by using the blood specimen in the blood collection tube for blood cell testing, a hematocrit value H (%) that is the ratio of the volume of red blood cells to the volume of whole blood; measuring, by using the blood specimen in the blood collection tube for blood coagulation testing, a hematocrit value H2 (%) that is the ratio of the volume of red blood cells to the volume of whole blood and a concentration c2 of a marker related to blood coagulation; and calculating a concentration c1 of a marker related to blood coagulation, in accordance with equation (1): c1=c2×9×H/(10-9×H)×(1-H2)/H2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、より正確な血液凝固関連マーカーの濃度を得ることができる血液凝固関連マーカー濃度の測定方法に関する。 The present invention relates to a blood coagulation-related marker concentration measurement method capable of obtaining a more accurate blood coagulation-related marker concentration.

疾病の予防や診断を目的に身体の状態を定量的に調べるため血液検査が行われている。
血液検査の種類としては検査対象項目毎に分類されており、血液中の蛋白質や酵素等を調べる生化学検査、赤血球や血小板等の血液細胞を調べる血球検査、血液中のブドウ糖濃度を調べる血糖検査、及び、血液凝固因子や血液凝固機能を調べる血液凝固検査がある。
Blood tests are performed to quantitatively examine the state of the body for the purpose of disease prevention and diagnosis.
The types of blood tests are categorized according to the items to be tested, such as biochemical tests that check proteins and enzymes in the blood, blood cell tests that check blood cells such as red blood cells and platelets, and blood glucose tests that check the glucose concentration in the blood And blood coagulation tests for examining blood coagulation factors and blood coagulation functions.

上記血液凝固検査においては血液凝固関連マーカーが測定され、なかでもフィブリノーゲン(fibrinogen:mg/dl)、FDP(fibrinogen degradation products:μg/ml)、Dダイマー(D dimer:μg/ml)、トロンビン・アンチトロビンIII複合体(thrombin・antithrombin III complex:ng/ml)、血小板第4因子PF4(platelet factor 4:ng/ml)、β−トロンボグロブリン(β−thromboglobulin:ng/ml)等の各血液凝固関連マーカーは、測定値が成分濃度として示される。 In the blood coagulation test, blood coagulation-related markers are measured. Among them, fibrinogen (mg / dl), FDP (fibrinogen degradation products: μg / ml), D dimer (D dimer: μg / ml), thrombin anti Each blood coagulation such as thrombin / antithrombin III complex (ng / ml), platelet factor PF4 (platelet factor 4: ng / ml), β-thromboglobulin (ng / ml), etc. Related markers are indicated as measured component concentrations.

通常、血液検査を行うためにはプラスチック製の真空採血管(以下、採血管)が使用されている。血液検査を行うためには、検査に応じた検体を準備する必要がある。検査のなかでも血球検査、血糖検査及び血液凝固検査においては、検体として血漿や血球が必要となる。従って、これらの検査に用いる真空採血管の中には、予め設定採血量に応じた抗凝固剤と呼ばれる血液の凝固を防ぐ薬剤(薬液)が収容されている。 Usually, a plastic vacuum blood collection tube (hereinafter referred to as a blood collection tube) is used for blood tests. In order to perform a blood test, it is necessary to prepare a sample according to the test. Among the tests, plasma and blood cells are required as specimens in blood cell tests, blood glucose tests, and blood coagulation tests. Therefore, in the vacuum blood collection tube used for these examinations, a medicine (medicine solution) for preventing blood coagulation called an anticoagulant corresponding to a set blood collection amount is stored in advance.

上記抗凝固剤としては、一般的には例えば、血球検査用採血管(以下、血算管)には乾燥状態のEDTA−2K、EDTA−2Naが、血液凝固検査用採血管(以下、凝固管)には溶液状態のクエン酸ナトリウムが用いられている。例えば、クエン酸ナトリウム水溶液としては、3.13%、3.2%等の種々の濃度のものが市販されている。 As the anticoagulant, for example, EDTA-2K and EDTA-2Na in a dry state are generally used for blood cell examination blood collection tubes (hereinafter referred to as blood count tubes), and blood coagulation test blood collection tubes (hereinafter referred to as coagulation tubes). ) Is sodium citrate in solution. For example, various sodium citrate aqueous solutions having various concentrations such as 3.13% and 3.2% are commercially available.

凝固管においては、採血する血液量と抗凝固剤量との容量比が9:1となるように規定されている(以下、血液量と抗凝固剤量との容量比9:1を「基準容量比」ともいう)。例えば、採血後の採血管内の液量(採血血液量+抗凝固剤量)を2.0mLとするためには、予め採血管に抗凝固剤0.2mLを収容しておき、採血される血液量が1.8mLとなるように採血管内の真空度を設定しておく。各血液凝固関連マーカーの測定値は、基準容量比に基づいて算出されることを前提にしている。 In the coagulation tube, the volume ratio between the volume of blood to be collected and the amount of anticoagulant is defined to be 9: 1 (hereinafter, the volume ratio of blood volume to anticoagulant amount is 9: 1. Also referred to as “capacity ratio”). For example, in order to set the liquid volume in the blood collection tube after blood collection (blood collection blood amount + anticoagulant amount) to 2.0 mL, blood to be collected by storing 0.2 mL of the anticoagulant in the blood collection tube in advance. The degree of vacuum in the blood collection tube is set so that the amount is 1.8 mL. It is assumed that the measurement value of each blood coagulation related marker is calculated based on the reference volume ratio.

しかしながら、凝固管の製造時の抗凝固剤量バラツキ、経時変化による抗凝固剤の減少、採血時の採血量バラツキ等により、実際の容量比は基準容量比から外れてしまっている可能性が高い。実際の容量比が基準容量比から外れた場合には、各血液凝固関連マーカーの測定値は実際の数値から誤って算出される可能性がある。 However, the actual volume ratio is likely to deviate from the standard volume ratio due to variations in the amount of anticoagulant during manufacture of the coagulation tube, a decrease in anticoagulant due to changes over time, and variations in the amount of blood collected during blood collection. . When the actual volume ratio deviates from the reference volume ratio, the measurement value of each blood coagulation related marker may be erroneously calculated from the actual numerical value.

このような血液凝固関連マーカーの測定値の誤りは、例えば、非特許文献1において論じられている。非特許文献1の第893頁の図3には、横軸にクエン酸ナトリウム溶液と血液の混合比とし、縦軸に混合比が1:9のときの測定値を100とした場合のプロトロンビン値(PT)、活性化部分トロンボプラスチン時間(APTT)、フィブリノーゲン(Fibg)の相対測定値が示されている。図3より、クエン酸ナトリウム溶液の混合比率が高くなるほどPT、APTTの測定値は高値化し、フィブリノーゲンの測定値は低値化することが判る。 Such an error in the measurement value of the blood coagulation-related marker is discussed in Non-Patent Document 1, for example. FIG. 3 on page 893 of Non-Patent Document 1 shows the prothrombin value when the horizontal axis is the mixing ratio of sodium citrate solution and blood, and the vertical axis is 100 when the measured value when the mixing ratio is 1: 9. Relative measurements of (PT), activated partial thromboplastin time (APTT), fibrinogen (Fibg) are shown. FIG. 3 shows that the higher the mixing ratio of the sodium citrate solution, the higher the measured values of PT and APTT, and the lower the measured value of fibrinogen.

特に、プラスチック製の真空採血管の場合には、管の材質が通常はPET(ポリエチレンテレフタレート)であるため、水蒸気の透過を無視することができず、経時的に採血管内の水分が蒸散することで薬剤(薬液)量が減少していくと考えられる。そこで、より正確に各血液凝固関連マーカーを測定する方法が求められていた。
成田厚子、外4名、「血液凝固検査における誤差要因について 第1報検体の採取法による影響」、医学検査、1995年、第44巻、第5号、890頁〜984頁
In particular, in the case of a plastic vacuum blood collection tube, since the material of the tube is usually PET (polyethylene terephthalate), the permeation of water vapor cannot be ignored, and the water in the blood collection tube evaporates over time. It is thought that the amount of medicine (chemical solution) will decrease. Therefore, a method for measuring each blood coagulation-related marker more accurately has been demanded.
Atsuko Narita and 4 others, “Error factors in blood coagulation tests, 1st report: Influence of sample collection method”, Medical examination, 1995, Vol. 44, No. 5, pages 890-984

本発明は、上記現状に鑑み、より正確な血液凝固関連マーカーの濃度を得ることができる血液凝固関連マーカー濃度の測定方法を提供することを目的とする。 An object of the present invention is to provide a blood coagulation-related marker concentration measurement method capable of obtaining a more accurate blood coagulation-related marker concentration in view of the above situation.

本発明は、血球検査用採血管と血液凝固検査用採血管とに採血された血液検体を用いて血液凝固関連マーカーの濃度を測定する方法であって、前記血球検査用採血管中の血液検体を用いて、全血液中に占める赤血球の容積比率であるヘマトクリット値H(%)を測定し、前記血液凝固検査用採血管中の血液検体を用いて、全血液中に占める赤血球の容積比率であるヘマトクリット値H2(%)と、血液凝固関連マーカーの濃度c2とを測定し、下記式(1)に従って、血液凝固関連マーカーの濃度c1を算出する血液凝固関連マーカー濃度の測定方法である。
以下に本発明を詳述する。
The present invention relates to a method for measuring the concentration of a blood coagulation-related marker using blood samples collected in a blood cell test blood collection tube and a blood coagulation test blood collection tube, and the blood sample in the blood cell test blood collection tube Is used to measure the hematocrit value H (%), which is the volume ratio of red blood cells in the whole blood, and using the blood sample in the blood collection tube for blood coagulation tests, the volume ratio of red blood cells in the whole blood This is a blood coagulation-related marker concentration measurement method in which a certain hematocrit value H2 (%) and a blood coagulation-related marker concentration c2 are measured, and the blood coagulation-related marker concentration c1 is calculated according to the following equation (1).
The present invention is described in detail below.

Figure 2009243955
Figure 2009243955

本発明者らは、血液検査の際には検査対象項目毎に別々の採血管に血液を採取することに着目した。そして鋭意検討の結果、血球検査用採血管と血液凝固検査用採血管とに採血された血液検体の各々について全血液中に占める赤血球の容積比率であるヘマトクリット値を測定し、各ヘマトクリット値を用いて測定された血液凝固関連マーカーの濃度を補正することにより、凝固管が基準容量比から外れてしまっている場合であっても、正確な血液凝固関連マーカー濃度が得られることを見出し、本発明を完成するに至った。 The present inventors paid attention to collecting blood in a separate blood collection tube for each item to be examined in the blood test. As a result of intensive studies, the hematocrit value, which is the volume ratio of red blood cells in the whole blood, is measured for each of the blood samples collected in the blood cell test blood collection tube and the blood coagulation test blood collection tube, and each hematocrit value is used. By correcting the concentration of the blood coagulation-related marker measured in this way, the present inventors have found that an accurate blood coagulation-related marker concentration can be obtained even when the coagulation tube has deviated from the reference volume ratio. It came to complete.

血球検査用採血管に採血された血液のヘマトクリット値Hは、血液中に占める赤血球の容積比率を示している。一方、血液凝固検査用採血管に採血された血液は薬剤量に応じた希釈を受けている。そのため、両者のヘマトクリット値から、血液凝固検査用採血管に採血された血液の希釈率を算出することができる。基準容量比は血液量と抗凝固剤量との容量比が9:1であり、血液濃度としては90%になる。従って、両者のヘマトクリット値を用いて、血液濃度が90%となるような関係式を導くことで、基準容量比に変換する希釈率補正係数を得ることができる。 The hematocrit value H of blood collected in the blood cell test blood collection tube indicates the volume ratio of red blood cells in the blood. On the other hand, the blood collected in the blood coagulation test blood collection tube is diluted according to the amount of the drug. Therefore, the dilution rate of the blood collected in the blood coagulation test blood collection tube can be calculated from both hematocrit values. The reference volume ratio is 9: 1 as the volume ratio between the blood volume and the anticoagulant volume, and the blood concentration is 90%. Therefore, by using both hematocrit values and deriving a relational expression such that the blood concentration is 90%, a dilution rate correction coefficient to be converted into the reference volume ratio can be obtained.

本発明の血液凝固関連マーカー濃度の測定方法は、以下の手順にて行う。
(1)同一人より同時に血液を血球検査用採血管と血液凝固検査用採血管とに採血する。
(2)血球検査用採血管中の血液検体を用いて、全血液中に占める赤血球の容積比率であるヘマトクリット値H(%)を測定する。
(3)血液凝固検査用採血管中の血液検体を用いて、全血液中に占める赤血球の容積比率であるヘマトクリット値H2(%)と、血液凝固関連マーカーの濃度c2とを測定する。
(4)上記式(1)に従って、血液凝固関連マーカーの濃度c1を算出する。
The method for measuring the blood coagulation-related marker concentration of the present invention is performed according to the following procedure.
(1) Blood is collected simultaneously from the same person into a blood cell test blood collection tube and a blood coagulation test blood collection tube.
(2) A hematocrit value H (%), which is a volume ratio of red blood cells in the whole blood, is measured using a blood sample in a blood collection tube for blood cell examination.
(3) Using the blood sample in the blood coagulation test blood collection tube, the hematocrit value H2 (%), which is the volume ratio of red blood cells in the whole blood, and the concentration c2 of the blood coagulation related marker are measured.
(4) The concentration c1 of the blood coagulation related marker is calculated according to the above formula (1).

本発明の血液凝固関連マーカー濃度の測定方法において用いる血球検査用採血管及び血液凝固検査用採血管としては特に限定されず、従来公知のものを用いることができる。もちろん、市販品を用いてもかまわない。 The blood collection tube for blood cell examination and the blood collection tube for blood coagulation test used in the method for measuring the blood coagulation-related marker concentration of the present invention are not particularly limited, and conventionally known blood collection tubes can be used. Of course, a commercially available product may be used.

上記ヘマトクリット値は、全血液中に占める赤血球の容積比率であり、通常は、血液一般検査を実施したときに赤血球数、血色素量、血小板数等と同時に測定される。
上記ヘマトクリット値の基準値は、男性では40〜50%、女性では35〜45%である。
上記ヘマトクリット値の測定方法としては特に限定されず、従来公知の方法により測定することができる。
The hematocrit value is a volume ratio of red blood cells occupying in the whole blood, and is usually measured simultaneously with the number of red blood cells, the amount of hemoglobin, the number of platelets, etc. when a general blood test is performed.
The reference value of the hematocrit value is 40 to 50% for men and 35 to 45% for women.
It does not specifically limit as a measuring method of the said hematocrit value, It can measure by a conventionally well-known method.

本発明の血液凝固関連マーカー濃度の測定方法の対象とする血液凝固関連マーカーは、血液検査において測定値が成分濃度として示されるものであれば特に限定されない。具体的には、例えば、フィブリノーゲン、FDP、Dダイマー、トロンビン・アンチトロビンIII複合体(TAT)、血小板第4因子PF4、β−トロンボグロブリン(β−TG)等が挙げられる。
これらの各血液凝固関連マーカーの測定方法としては特に限定されず、従来公知の方法により測定することができる。
The blood coagulation-related marker as a target of the method for measuring the blood coagulation-related marker concentration of the present invention is not particularly limited as long as the measurement value is shown as a component concentration in the blood test. Specifically, for example, fibrinogen, FDP, D dimer, thrombin / antithrombin III complex (TAT), platelet factor PF4, β-thromboglobulin (β-TG) and the like can be mentioned.
A method for measuring each of these blood coagulation-related markers is not particularly limited, and can be measured by a conventionally known method.

上記式(1)の導き方について以下に簡単に説明する。
まず、式(1)を導くための記号を表1のように定義する。ここで、血液凝固検査用採血管が基準容量比である場合の各値を1の記号で、基準容量比から外れた不明の容量比である場合の各値を2の記号で表す。
How to derive the above formula (1) will be briefly described below.
First, symbols for deriving the formula (1) are defined as shown in Table 1. Here, each value in the case where the blood collection tube for blood coagulation test has a reference volume ratio is represented by 1 symbol, and each value in the case of an unknown volume ratio that deviates from the reference volume ratio is represented by 2 symbol.

Figure 2009243955
Figure 2009243955

式(1)は以下の手順にて導くことができる。
まず、成分濃度は同じであることから、m1/s1=m2/s2である。これより、
式(ア) m1/m2=s1/s2
が導ける。
Equation (1) can be derived by the following procedure.
First, since the component concentrations are the same, m1 / s1 = m2 / s2. Than this,
Formula (A) m1 / m2 = s1 / s2
Can guide.

薬剤希釈時のヘマトクリット値は、H1=b1/(s1+b1+a1)である。これより、
式(イ) s1+a1=b1(1−H1)/H1
が導ける。同様に、
式(ウ) s2+a2=b2(1−H2)/H2
も導ける。
The hematocrit value at the time of drug dilution is H1 = b1 / (s1 + b1 + a1). Than this,
Formula (A) s1 + a1 = b1 (1-H1) / H1
Can lead. Similarly,
Formula (c) s2 + a2 = b2 (1-H2) / H2
Can also guide.

血漿と血球との比は同じであることから、s1/b1=s2/b2である。これより、
式(エ) s1×b2=s2×b1
が導ける。
Since the ratio of plasma to blood cells is the same, s1 / b1 = s2 / b2. Than this,
Formula (D) s1 × b2 = s2 × b1
Can lead.

薬剤を加味した濃度より、
式(オ) c1=m1/(s1+a1)
が導ける。同様に、
式(カ) c2=m2/(s2+a2)
も導ける。
From the concentration of drugs
Formula (e) c1 = m1 / (s1 + a1)
Can lead. Similarly,
Formula (f) c2 = m2 / (s2 + a2)
Can also guide.

式(オ)/式(カ)より、c1/c2=m1/m2×(s2+a2)/(s1+a1)。
この式に式(ア)を代入すると、c1/c2=s1/s2×(s2+a2)/(s1+a1)。更に式(イ)(ウ)を代入すると、c1/c2=s1/s2×(b2(1−H2)/H2)/(b1(1−H1)/H1)=s1/s2×b2/b1×((1−H2)/H2)/((1−H1)/H1)。
式(エ)より、
c1/c2=((1−H2)/H2)/((1−H1)/H1)=H1/(1−H1)×(1−H2)/H2。
From the formula (e) / the formula (f), c1 / c2 = m1 / m2 × (s2 + a2) / (s1 + a1).
When the formula (A) is substituted into this formula, c1 / c2 = s1 / s2 × (s2 + a2) / (s1 + a1). Further, by substituting the equations (A) and (C), c1 / c2 = s1 / s2 × (b2 (1-H2) / H2) / (b1 (1-H1) / H1) = s1 / s2 × b2 / b1 × ((1-H2) / H2) / ((1-H1) / H1).
From equation (d)
c1 / c2 = ((1-H2) / H2) / ((1-H1) / H1) = H1 / (1-H1) × (1-H2) / H2.

H1とH2で表した補正式は、
式(キ) c1=c2×H1/(1−H1)×(1−H2)/H2
となる。
The correction formula expressed by H1 and H2 is
Formula (G) c1 = c2 * H1 / (1-H1) * (1-H2) / H2
It becomes.

一方、H1とHの関係式は、
式(ク) H1=9/10H
である。
On the other hand, the relational expression between H1 and H is
Formula (h) H1 = 9 / 10H
It is.

式(キ)、(ク)より、
c1=c2×9/10×H/(1−9/10×H)×(1−H2)/H2
=c2×9×H/(10−9×H)×(1−H2)/H2
である。
From formulas (ki) and (ku),
c1 = c2 * 9/10 * H / (1-9 / 10 * H) * (1-H2) / H2
= C2 * 9 * H / (10-9 * H) * (1-H2) / H2
It is.

本発明によれば、より正確な血液凝固関連マーカーの濃度を得ることができる血液凝固関連マーカー濃度の測定方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the measuring method of the blood coagulation related marker density | concentration which can obtain the more exact blood coagulation related marker density | concentration can be provided.

以下に実施例を挙げて本発明の態様を更に詳しく説明するが、本発明はこれら実施例にのみ限定されるものではない。 Hereinafter, embodiments of the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

(1)実験準備と採血
注射用水(大塚製薬)を用いてクエン酸3ナトリウム・2水和物(和光純薬製、試薬特級)を溶解し、重量濃度が3.13%となるように抗凝固剤液を調製した。
PET管(外径13mm、長さ75mm)に血液量と抗凝固剤液量とが表2となるようにして血液凝固検査用採血管を準備した。
(1) Preparation of experiment and blood collection Water for injection (Otsuka Pharmaceutical Co., Ltd.) Dissolve trisodium citrate dihydrate (manufactured by Wako Pure Chemicals, special grade of reagent) to prevent the weight concentration to be 3.13%. A coagulant solution was prepared.
A blood collection tube for blood coagulation test was prepared so that the amount of blood and the amount of anticoagulant solution were as shown in Table 2 on a PET tube (outer diameter 13 mm, length 75 mm).

Figure 2009243955
Figure 2009243955

一方、血球検査用採血管としては、抗凝固剤であるEDTA−2KがPET管内面にコーティングされた規定採血量2mLの真空採血管(徳山積水工業株式会社製、インセパックII−D SPM−K0502EM−ムラサキ)を用いた。
該血球検査用採血管中の血液検体を用いて、ヘマトクリット値Hを測定したところ、41.2%であった。
On the other hand, as a blood collection tube for blood cell examination, an EDTA-2K, which is an anticoagulant, is coated on the inner surface of a PET tube with a defined blood collection volume of 2 mL (Insepack II-D SPM-K0502EM- Murasaki) was used.
When the hematocrit value H was measured using the blood sample in the blood collection tube for blood cell examination, it was 41.2%.

(2)フィブリノーゲンの測定
血液凝固検査用採血管中の血液検体を用いて、ヘマトクリット値H2(%)と、血液凝固関連マーカーとしてフィブリノーゲンの濃度c2とを測定した。基準容量比に相当する実験番号4のフィブリノーゲンの測定値を100%として、上記式(1)に従いフィブリノーゲン値(%)を算出した。
結果を表3に示した。
(2) Measurement of fibrinogen Using a blood sample in a blood collection tube for blood coagulation test, a hematocrit value H2 (%) and a fibrinogen concentration c2 as a blood coagulation-related marker were measured. Fibrinogen value (%) was calculated according to the above formula (1), with the measured value of fibrinogen of Experiment No. 4 corresponding to the reference volume ratio as 100%.
The results are shown in Table 3.

Figure 2009243955
Figure 2009243955

表3より、直接測定したフィブリノーゲンは容量比に依存して測定値が変動するのに対し、式(1)により算出したフィブリノーゲン値は容量比が変わっても、ほぼ一定した測定値に補正されていることが判った。
図1に血液濃度を横軸として、直接測定したフィブリノーゲンの相対値と、式(1)により算出したフィブリノーゲンの相対値のプロットを示した。
From Table 3, the measured value of fibrinogen measured directly varies depending on the volume ratio, whereas the fibrinogen value calculated by equation (1) is corrected to an almost constant measured value even if the volume ratio changes. I found out.
FIG. 1 shows a plot of the relative value of fibrinogen measured directly and the relative value of fibrinogen calculated by equation (1) with the blood concentration as the horizontal axis.

本発明によれば、より正確な血液凝固関連マーカーの濃度を得ることができる血液凝固関連マーカー濃度の測定方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the measuring method of the blood coagulation related marker density | concentration which can obtain the more exact blood coagulation related marker density | concentration can be provided.

直接測定したフィブリノーゲンの相対値と、式(1)により算出したフィブリノーゲンの相対値のプロットである。It is the plot of the relative value of the fibrinogen measured directly, and the relative value of the fibrinogen calculated by Formula (1).

Claims (1)

血球検査用採血管と血液凝固検査用採血管とに採血された血液検体を用いて血液凝固関連マーカーの濃度を測定する方法であって、
前記血球検査用採血管中の血液検体を用いて、全血液中に占める赤血球の容積比率であるヘマトクリット値H(%)を測定し、
前記血液凝固検査用採血管中の血液検体を用いて、全血液中に占める赤血球の容積比率であるヘマトクリット値H2(%)と、血液凝固関連マーカーの濃度c2とを測定し、
下記式(1)に従って、血液凝固関連マーカーの濃度c1を算出する
ことを特徴とする血液凝固関連マーカー濃度の測定方法。
Figure 2009243955
A method for measuring the concentration of a blood coagulation-related marker using blood samples collected in a blood cell test blood collection tube and a blood coagulation test blood collection tube,
Using a blood sample in the blood collection tube for blood cell examination, a hematocrit value H (%) which is a volume ratio of red blood cells occupying in the whole blood is measured,
Using a blood sample in the blood collection tube for blood coagulation test, a hematocrit value H2 (%), which is a volume ratio of red blood cells occupying in the whole blood, and a concentration c2 of a blood coagulation related marker are measured,
A blood coagulation-related marker concentration measurement method, wherein the blood coagulation-related marker concentration c1 is calculated according to the following formula (1).
Figure 2009243955
JP2008088220A 2008-03-28 2008-03-28 Method for measuring concentration of marker related to blood coagulation Pending JP2009243955A (en)

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