WO2005086594A2 - 免疫測定法用測定値低下抑制剤及びそれを用いた免疫測定法 - Google Patents
免疫測定法用測定値低下抑制剤及びそれを用いた免疫測定法 Download PDFInfo
- Publication number
- WO2005086594A2 WO2005086594A2 PCT/JP2005/003135 JP2005003135W WO2005086594A2 WO 2005086594 A2 WO2005086594 A2 WO 2005086594A2 JP 2005003135 W JP2005003135 W JP 2005003135W WO 2005086594 A2 WO2005086594 A2 WO 2005086594A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- immunoassay
- measured value
- reagent
- value decrease
- inhibitor
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/5306—Improving reaction conditions, e.g. reduction of non-specific binding, promotion of specific binding
Definitions
- the present invention relates to a measurement value lowering inhibitor for an immunoassay for suppressing a decrease in a measured value due to an interfering substance, an immunoassay using the same, and an immunoassay reagent.
- test items that use biological samples as test samples.
- immunoassays it is known that interfering substances that affect the immune response of the target substance are present in the biological sample. This effect affects the accuracy of the measurements, and several reports have been made.
- JP-A-9-304384 describes the use of a conjugated gen-based polymer containing a sulfonic acid group or a salt thereof to avoid false positives in an immunoassay. It is necessary to improve accuracy to avoid interfering substances that may be present in all biological samples rather than false-positive substances present in simple samples.
- Patent Document 1 Japanese Patent Laid-Open No. 9-304384
- An object of the present invention is to provide a measurement value decrease inhibitor for an immunoassay that can suppress the influence of an interfering substance in a test sample and improve the accuracy of the immunoassay, and to use the same.
- Another object of the present invention is to provide an immunoassay method and an immunoassay reagent in which a decrease in measured value due to an interfering substance is suppressed.
- the inventors of the present application have immunopolymerized an ionic surfactant having a molecular weight of 1000 to 100,000, which is a polymer obtained by polymerizing a hydrophobic cyclic monomer having an ionic functional group.
- the present inventors have found that by coexisting in a reaction solution for performing the method, the influence of interfering substances in the test sample can be suppressed and the accuracy of the immunoassay can be improved.
- the present invention provides a polymer obtained by polymerizing a hydrophobic cyclic monomer having an ionic functional group, and also has an ionic surfactant force having a molecular weight of 1000 to 100,000, and is measured by an interfering substance.
- the present invention also provides an immunoassay method carried out in the presence of the measured value decrease inhibitor of the present invention.
- the present invention provides an immunoassay comprising the above-described measurement value decrease inhibitor of the present invention in a reagent for an immunoassay containing at least a buffer solution and sensitizing particles or antiserum. Providing forensic reagents.
- the present invention provides the use of the above-described ionic surfactant as a measurement value decrease inhibitor for immunoassay. Furthermore, the present invention provides a method for suppressing a decrease in measurement value in an immunoassay method, which comprises coexisting the above-described ionic surfactant in a reaction solution of the immunoassay method.
- immunoagglutination is the detection of an antigen or antibody in a test sample based on a change in optical properties such as turbidity or absorbance of a reaction solution caused by an antigen-antibody reaction, or This is a method of quantification, and includes immunoturbidimetry and immunotrophic method (nephrometry).
- the antibody or antigen that reacts with the target antigen or target antibody in the test sample is usually immobilized on particles such as latex particles ( Sensitized particles), the detection or quantification of the test substance is performed based on the change in optical properties resulting from the aggregation of the sensitized particles due to the antigen-antibody reaction. Called).
- Sensitized particles latex particles
- the detection or quantification of the test substance is performed based on the change in optical properties resulting from the aggregation of the sensitized particles due to the antigen-antibody reaction. Called).
- it is often used for antiserum without using sensitizing particles.
- the measured value reduction inhibitor of the immunoassay of the present invention is a polymer obtained by polymerizing a hydrophobic cyclic monomer having an ionic functional group, and has a molecular weight of 1000 to 100,000. Consists of.
- the ionic functional group is preferably a sulfone group or a salt thereof, a carboxylic acid or a salt thereof, or an amine (such as a quaternary amine that is ionized in an aqueous solution), particularly a sulfone group or a salt thereof.
- the ionic surfactant may be an anionic surfactant or a cationic surfactant.
- examples of the hydrophobic ring include an aromatic ring and a cycloalkyl ring, which may be a heterocyclic ring containing an oxygen atom, a nitrogen atom, a thio atom, or the like! It may be.
- Preferred examples of the aromatic ring as the hydrophobic ring include a benzene ring, a naphthalene ring, and an anthracene ring, and a benzene ring or a naphthalene ring is preferable, and a benzene ring is more preferable.
- Preferable polymers used as a measured value reduction inhibitor include polyanetene sulfonic acid sodium salt, polystyrene sulfonic acid sodium salt, sodium salt of naphthalene sulfonic acid formalin condensate, sodium salt of aromatic sulfonic acid formalin condensate (specifically Include Disroll (trade name, manufactured by Nippon Emulsifier Co., Ltd.), Demol (trade name, manufactured by Kao Corporation), Politi PS-1900 (Lion), Politi N-100K (trade name, manufactured by Lion Corporation), etc. Is possible.
- examples of preferred U and polymer used as a measured value decrease inhibitor include those having a repeating unit represented by the following general formula [I]. [0015] [Chemical 1]
- Ar is a hydrophobic ring
- X is an ionic functional group
- R 1 to R 3 are each independently a hydrogen atom or an alkyl group
- n is an integer of 0 to 10
- each carbon atom constituting Ar The hydrogen atom bonded to is substituted with a substituent without impairing the effect of the present invention, and may be! /,
- X and Ar are the above-described ionic functional group and hydrophobic ring, respectively.
- R 1 to R 3 are an alkyl group
- a lower alkyl group in the present specification and claims, “lower” means a carbon number of 14
- N is preferably 0 to 3.
- the hydrogen atom bonded to each carbon atom constituting Ar may be substituted with a substituent that does not impair the effects of the present invention. Examples of such a substituent include a lower alkyl group and a lower alkoxyl. The group can be mentioned.
- ⁇ is an atom or group that becomes a monovalent cation in an aqueous solution, preferably an alkali metal such as sodium or potassium, and R 1 to R 3 are each independently a hydrogen atom or a lower group.
- the ruxoxyl groups R 4 to R 6 each independently represent a hydrogen atom or a lower alkyl group.
- repeating units represented by the general formula [I] particularly preferred ones include an guanetole sulfonate represented by the following formula [III] and a styrene sulfone represented by the following formula [IV]. And an acid salt and a naphthalene sulfonic acid formalin condensate salt represented by the following formula [V].
- ⁇ is synonymous with the formula [I], and is preferably an alkali metal such as sodium or rhodium.
- the molecular weight of the polymer is from 1,000 to 100,000, preferably from 1,000 to 60,000.
- the above repeating units may be used alone or in combination of two or more. It is preferable that the polymer used as the measurement value lowering inhibitor is composed of only the above repeating units, but may contain other units within a range without adversely affecting the effects of the present invention! Usually, the content of the polymer in such other units, 20 mole 0/0 or less, preferably 10 mol% or less, more preferably not more than 5 mol%.
- the immunoassay method of the present invention is an immunoassay method in the presence of the above-described measured value decrease inhibitor of the present invention.
- the amount of the measured value decrease inhibitor used is not particularly limited.
- the final concentration in the reaction solution is 0.01% to 5% (weight to volume), preferably about 0.1 to 1%.
- test sample to be subjected to the immunoassay method of the present invention is not particularly limited, but a biological sample capable of greatly exerting the effect of the present invention for suppressing the influence of interfering substances is preferred.
- Body fluids such as serum, plasma, urine, stool, saliva, tissue fluid, cerebrospinal fluid, wiping fluid, and the like are preferable, and blood, serum, plasma, and dilutions thereof are more preferable.
- the antibody or antigen sensitized to the sensitized particles used when the immunoassay is an immunoagglutination method is not particularly limited.
- CRP C-reactive protein
- RF Rheumatoid factor
- FER ferritin
- Mb myoglobin
- the immunoassay method of the present invention can be carried out in the same manner as in the prior art, except that the immunoassay method is performed in the presence of the above-mentioned measured value decrease inhibitor. That is, when the immunoassay is an immunoaggregation method, the concentration of the sensitizing particles in the reaction solution is not particularly limited, but is usually about 0.0 1-0. 5%, and the reaction is usually It is carried out at 1 ° C to 56 ° C, preferably 37 ° C for 1 minute to 10 minutes. However, the reaction conditions are not limited to these. As the reaction medium, various buffer solutions such as a glycine buffer solution are usually used.
- the turbidity or absorbance of the reaction solution is measured before the start of the reaction and after a certain period of time after the start of the reaction, or measured over time before and after the start of the reaction, and the magnitude of the change in turbidity or absorbance (endpoint method). ) Or the rate of change (rate method) to detect or quantify the analyte.
- the immunoagglutination method can be performed manually or using an automatic analyzer.
- the measured value decrease inhibitor and sensitized particles or antiserum may be mixed with the test sample at the same time.
- the effect of the present invention includes the first step of contacting the measured value decrease inhibitor and the second step of causing the test sample after the first step to react with sensitized particles or antiserum with an antigen antibody. It is preferable for obtaining the maximum.
- both the first step and the second step are not particularly limited, but the reaction time is usually 1 minute to 10 minutes, preferably 1 minute to 15 minutes, and the reaction temperature is usually 1 ° C to 56 ° C. Preferably it is performed at 37 ° C.
- the concentration of the measured value decrease inhibitor is preferably 0.01% to 5% (weight Z volume) in the reaction solution of the first step, and more preferably 0.05— About 1%.
- the immunoassay method of the present invention is not limited to the immunoagglutination method.
- each immunoassay may be performed by including the measured value decrease inhibitor of the present invention in an immune reaction medium.
- the concentration of the measured value decrease inhibitor may be the same as described above.
- the present invention also provides an immunoassay reagent comprising a buffer solution, sensitized particles, and the above-described measurement value decrease inhibitor.
- the immunoassay reagent contains at least a buffer solution and is mixed with the test sample in the first test.
- a two-component reagent consisting of a drug, at least a buffer solution and sensitized particles, and a second reagent added to the mixture of the test sample and the first reagent.
- the measured value reduction inhibitor is contained in the first reagent.
- the concentration of the measured value decrease inhibitor in the first reagent is not particularly limited, but is usually 0.01% to 5% (w / v), preferably 0.01 to l% (w / v ) Degree.
- the test sample may be diluted with a diluent.
- a latex turbidimetric reagent for measuring myoglobin having the following compositional power was prepared.
- a latex turbidimetric reagent for measuring myoglobin having the following compositional power was prepared.
- a latex turbidimetric reagent for measuring myoglobin having the following compositional power was prepared, in which the first reagent did not contain sodium sodium polysulfonate and polysodium sodium P-sulfonate.
- the buffer solution used in the first reagent and the second reagent of Example Example 2 and Comparative Example 1 can be a phosphate buffer solution, a Good buffer solution, and the like. A reasonable pH can be used.
- Measurement method Sample preparation Dilute the test sample at a dilution concentration of 1/10 (diluted 10 times) to 1/10 (not diluted) using physiological saline as diluent.
- Example 2 Measurement was carried out using the reagents of Example 2 and Comparative Example 1. Add 200 L of the first reagent to 20 L of the sample prepared above, stir and mix at 37 ° C, leave it for 5 minutes, add the second reagent 100 / z L, and stir and mix at 37 ° C. The aggregation reaction for about 2 minutes was measured as the amount of change in absorbance at 570 nm. A sample with a known concentration was measured in advance under the same conditions, and a calibration curve representing the relationship between the concentration and the amount of change in absorbance was prepared. The obtained measured values (ng / mL) were compared depending on the presence or absence of a measured value lowering inhibitor in the first reagent.
- Table 1 The results are shown in Table 1 below.
- the “theoretical value” is based on the measured value of a dilution concentration of 1/10 (diluted 10 times) that can ignore the measured value reduction effect caused by coexisting interfering substances in each example. This means the value obtained by multiplying this by the numerator of the dilution concentration (10 times for dilution concentration 10/10, 2 times for 2/10).
- the difference (%) means (theoretical value ⁇ measured value) Z theoretical value X 100 (%), and the smaller the difference (%), the smaller the deviation from the theoretical value.
- the measured value drop inhibitor was not included.
- Comparative Example 1 the difference between the theoretical value and the measured value reached 33% in the undiluted sample (diluted concentration 10/10).
- the difference was 5% or 4% even without dilution.
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Abstract
Description
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Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2557473A CA2557473C (en) | 2004-02-26 | 2005-02-25 | Measurement value lowering inhibitor for immunoassay method and immunoassay method using the same |
ES05719536T ES2400492T3 (es) | 2004-02-26 | 2005-02-25 | Inhibidor de la reducción de los valores de medición para un procedimiento de inmunoensayo y procedimiento de inmunoensayo que usa dicho inhibidor |
EP05719536A EP1724582B1 (en) | 2004-02-26 | 2005-02-25 | Measurement value lowering inhibitor for immunoassay method and immunoassay method using the same |
PL05719536T PL1724582T3 (pl) | 2004-02-26 | 2005-02-25 | Inhibitor obniżania wartości pomiarowej dla sposobu oznaczania immunologicznego oraz sposób oznaczania immunologicznego go wykorzystujący |
DK05719536.4T DK1724582T3 (da) | 2004-02-26 | 2005-02-25 | Måleværdier der formindsker inhibitor for immnnoassay-fremgangsmåde og immunoassayfremgangsmåde til anvendelse af de samme |
AU2005220672A AU2005220672B2 (en) | 2004-02-26 | 2005-02-25 | Measurement value lowering inhibitor for immunoassay method and immunoassay method using the same |
KR1020067015298A KR101153249B1 (ko) | 2004-02-26 | 2005-02-25 | 면역측정법용 측정값 저하 억제제를 이용한 면역측정법 |
CN2005800062666A CN1926432B (zh) | 2004-02-26 | 2005-02-25 | 免疫测定法用测定值降低抑制剂及使用其的免疫测定法 |
US10/590,785 US8524452B2 (en) | 2004-02-26 | 2005-02-25 | Measurement value lowering inhibitor for immunoassay method and immunoassay method using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004051184A JP4580180B2 (ja) | 2004-02-26 | 2004-02-26 | 免疫測定法用測定値低下抑制剤及びそれを用いた免疫測定法 |
JP2004-051184 | 2004-02-26 |
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WO2005086594A2 true WO2005086594A2 (ja) | 2005-09-22 |
WO2005086594A3 WO2005086594A3 (ja) | 2005-11-24 |
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PCT/JP2005/003135 WO2005086594A2 (ja) | 2004-02-26 | 2005-02-25 | 免疫測定法用測定値低下抑制剤及びそれを用いた免疫測定法 |
Country Status (11)
Country | Link |
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US (1) | US8524452B2 (ja) |
EP (1) | EP1724582B1 (ja) |
JP (1) | JP4580180B2 (ja) |
KR (1) | KR101153249B1 (ja) |
CN (1) | CN1926432B (ja) |
AU (1) | AU2005220672B2 (ja) |
CA (1) | CA2557473C (ja) |
DK (1) | DK1724582T3 (ja) |
ES (1) | ES2400492T3 (ja) |
PL (1) | PL1724582T3 (ja) |
WO (1) | WO2005086594A2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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BRPI0917851B1 (pt) * | 2008-08-22 | 2021-05-11 | Denka Seiken Co., Ltd. | métodos para inibir a adsorção da cistatina c e para medir cistatina c em uma amostra |
KR101675412B1 (ko) | 2009-03-31 | 2016-11-11 | 덴카 세이켄 가부시키가이샤 | 면역 분석 방법 및 그것을 위한 시약 |
JP5883645B2 (ja) | 2011-12-28 | 2016-03-15 | デンカ生研株式会社 | 気泡吸着抑制方法 |
JP5996234B2 (ja) | 2012-03-30 | 2016-09-21 | デンカ生研株式会社 | 免疫分析方法及び試薬 |
JP6116268B2 (ja) * | 2013-01-31 | 2017-04-19 | デンカ生研株式会社 | 生体粘膜由来検体測定イムノアッセイにおいて偽陰性を抑制する方法 |
CN103245536A (zh) * | 2013-04-26 | 2013-08-14 | 杨铁钊 | 植物叶片中挥发氨的收集装置及其检测方法 |
JP6675834B2 (ja) * | 2015-05-21 | 2020-04-08 | デンカ生研株式会社 | イムノクロマト試験片及びそれを用いたイムノクロマト法 |
WO2018181263A1 (ja) | 2017-03-27 | 2018-10-04 | 日本ハム株式会社 | 体液による抗原抗体反応阻害を防止する物質 |
Family Cites Families (12)
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JPS57182169A (en) * | 1981-05-02 | 1982-11-09 | Mitsubishi Chem Ind Ltd | Measuring method for antigen-antibody reaction |
US4454232A (en) * | 1982-06-07 | 1984-06-12 | Bio-Rad Laboratories, Inc. | Estriol assay |
WO1990002202A1 (en) * | 1988-08-16 | 1990-03-08 | Cetus Corporation | Reduction of peroxidatic and catalatic interference with assays of peroxidatic activity |
JP2691575B2 (ja) * | 1988-08-26 | 1997-12-17 | 第一化学薬品株式会社 | 免疫反応の測定方法 |
DE3919393A1 (de) * | 1989-06-14 | 1990-12-20 | Hoechst Ag | Verfahren zur stabilisierung von auf festphasen immobilisierten biologisch aktiven substanzen |
AU6879291A (en) * | 1990-01-16 | 1991-08-05 | Prutech Research And Development Partnership Ii | Combination assay for antibody or antigen |
US5972718A (en) * | 1996-02-28 | 1999-10-26 | The Blood Center Research Foundation | Method of detecting heparin-induced thrombocytopenia |
JPH09304384A (ja) * | 1996-05-09 | 1997-11-28 | Japan Synthetic Rubber Co Ltd | 免疫測定法 |
CN1225120A (zh) * | 1996-05-15 | 1999-08-04 | 普罗格特-甘布尔公司 | 含有改进的淀粉酶、纤维素酶和阳离子型表面活性剂的洗涤剂组合物 |
JP4454885B2 (ja) | 2001-05-21 | 2010-04-21 | アルフレッサファーマ株式会社 | 免疫測定方法およびそのための試薬 |
JP3851807B2 (ja) | 2001-11-07 | 2006-11-29 | アルフレッサファーマ株式会社 | 免疫反応におけるプロゾーン現象抑制方法及び免疫反応測定用試薬 |
WO2004092733A1 (en) | 2003-04-14 | 2004-10-28 | Caliper Life Sciences, Inc. | Reduction of migration shift assay interference |
-
2004
- 2004-02-26 JP JP2004051184A patent/JP4580180B2/ja not_active Expired - Lifetime
-
2005
- 2005-02-25 EP EP05719536A patent/EP1724582B1/en active Active
- 2005-02-25 AU AU2005220672A patent/AU2005220672B2/en active Active
- 2005-02-25 DK DK05719536.4T patent/DK1724582T3/da active
- 2005-02-25 ES ES05719536T patent/ES2400492T3/es active Active
- 2005-02-25 KR KR1020067015298A patent/KR101153249B1/ko active IP Right Grant
- 2005-02-25 CN CN2005800062666A patent/CN1926432B/zh active Active
- 2005-02-25 US US10/590,785 patent/US8524452B2/en active Active
- 2005-02-25 CA CA2557473A patent/CA2557473C/en active Active
- 2005-02-25 WO PCT/JP2005/003135 patent/WO2005086594A2/ja active Application Filing
- 2005-02-25 PL PL05719536T patent/PL1724582T3/pl unknown
Non-Patent Citations (1)
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See references of EP1724582A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1724582A2 (en) | 2006-11-22 |
US20100143933A1 (en) | 2010-06-10 |
AU2005220672B2 (en) | 2012-01-19 |
EP1724582B1 (en) | 2013-01-09 |
CN1926432A (zh) | 2007-03-07 |
KR101153249B1 (ko) | 2012-06-05 |
WO2005086594A3 (ja) | 2005-11-24 |
CA2557473C (en) | 2014-09-16 |
JP4580180B2 (ja) | 2010-11-10 |
CN1926432B (zh) | 2011-06-15 |
KR20070001937A (ko) | 2007-01-04 |
EP1724582A4 (en) | 2008-02-27 |
ES2400492T3 (es) | 2013-04-10 |
CA2557473A1 (en) | 2005-09-22 |
DK1724582T3 (da) | 2013-03-25 |
PL1724582T3 (pl) | 2013-06-28 |
AU2005220672A1 (en) | 2005-09-22 |
US8524452B2 (en) | 2013-09-03 |
JP2005241415A (ja) | 2005-09-08 |
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