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. 2000 May 1;12(2):46–55.

Table II.

Assay Number Name of assay or principle Units used in the assay Measured value in NIBSC 87/512 in units of the assay
Detection of increase int-PA-PAI-1 complex
1 Immunofunctional t-PA-PAI-1 U/ml
2 t-PA-PAI-1 complex ELISA ng/ml 13.6
3 t-PA-PAI-1 complex ELISA ng/ml 33.5
Detection of t-PA excess after reaction
4 8-point titration assay with t-PA IU/ml (t-PA) 19.2
5 Coatesr®PAI-1 AU/ml 23.7
6 ípeclroh’so©PL, participantl U/ml 31.8
7 Spectrolyse®PL, participant 2 U/ml 32.0
8 Bioimmunoassry U/ml (t-PA) 24.8
9 SOIA-PA1 U/ml 27.0
10 TC®Actibind PAI-1 U/ml 22.4
11 TC®Actibind PAI-1/CL U/ml 25.0
12 TC®PAI-1 activity assay U/ml 13.5
13 Single point titration with t-PA IU/ml (t-PA 52.2
Target enzyme for PAI-1 is u-PA
Detection of u-PA-PAI-1 complex
14 u-PA-PAI-1 complex ELISA, participant 1 pmol/l 713
15 u-PA-PAI-1 complex ELISA, participant 2 pmol/l 581
Detection of u-PA excess after reaction
16 Stachrom© PAI AU/ml 25.9
17 Berichrom© PAI IU/ml (u-PA) 5.6