发明名称 |
Method for simultaneously determining multiple coagulation proteases |
摘要 |
The present invention relates to a chromogenic method for simultaneously determining the activity of multiple coagulation proteases or for simultaneously determining the inhibition of multiple coagulation proteases in a single test reaction. For this purpose, use is made of two chromogenic substrates which have different absorption maxima and whose color signals can be separated spectrally. |
申请公布号 |
US9482673(B2) |
申请公布日期 |
2016.11.01 |
申请号 |
US201514589425 |
申请日期 |
2015.01.05 |
申请人 |
SIEMENS HEALTHCARE DIAGNOSTICS PRODUCTS GMBH |
发明人 |
Zander Norbert |
分类号 |
C12Q1/56;C12Q1/37;C12N9/50;G01N33/573 |
主分类号 |
C12Q1/56 |
代理机构 |
Slayden Grubert Beard PLLC |
代理人 |
Slayden Grubert Beard PLLC |
主权项 |
1. A method for determining anti-thrombin and anti-factor Xa anticoagulant concentrations in a test sample which contains human plasma and which is suspected of containing an anti-thrombin anticoagulant, an anti-factor Xa anticoagulant, or a combination thereof, the method comprising:
performing a single test reaction by mixing the test sample which contains the human plasma and which is suspected of containing the anti-thrombin anticoagulant, the anti-factor Xa anticoagulant, or the combination thereof, with selected substances including (a) a defined amount of thrombin, (b) a defined amount of factor Xa, (c) a first chromogenic substrate specific for thrombin, and (d) a second chromogenic substrate specific for factor Xa, wherein a chromophore of the first chromogenic substrate and a chromophore of the second chromogenic substrate have respective absorption maximums that differ by at least 100 nm; photometrically determining absorption changes in the single test reaction over time; comparing the photometrically determined absorption changes in the single test reaction with photometrically determined absorption changes occurring in a control test reaction between an anticoagulant-free control sample and the selected substances; determining inhibition of the absorption changes caused by the anti-thrombin and/or anti-factor Xa anticoagulants in the test sample based on the comparison of the photometrically determined absorption changes; and determining the anti-thrombin and anti-factor Xa anticoagulant concentrations in the test sample based on the inhibition of the absorption changes in the single test reaction. |
地址 |
Marburg DE |