Microparticle-enhanced nephelometric immunoassay of human plasminogen.

Abstract:

:A microparticle-enhanced nephelometric immunoassay was developed for plasminogen quantitation in human plasma. It is based on the nephelometric measurement of the light scattered by microparticle clusters formed during a sandwich reaction between plasminogen, microparticle--anti-plasminogen conjugate, and the free antibodies of anti-plasminogen rabbit antiserum. This immunoassay was sensitive (detection limit in reaction mixture, 34 micrograms/L) and could be performed in 500-fold diluted human plasma, excluding any interference or sample pretreatment. It allowed the quantitation of plasminogen on a large range of concentrations (17-550 mg/L), with a security in antigen excess reaching 1,100 mg/L, with accuracy (linear recovery in dilution-overloading assay and correlation with conventional immunonephelometry), and precision (within- and between-run coefficients of variation lower than 8%). A normal reference range from 54 to 148 mg/L (mean +/- 2 SD) was calculated from plasminogen concentration in plasma from 130 adults. Easy to perform (no washing or phase separation) and rapid (two steps of 30 minutes then 1 hour of incubation at room temperature), this microparticle-enhanced nephelometric immunoassay could be an interesting alternative method for human plasminogen quantitation.

journal_name

J Clin Lab Anal

authors

Marchal E,Montagne P,Cuillière ML,Béné MC,Faure G

doi

10.1002/(SICI)1098-2825(1996)10:2<85::AID-JCLA5>3.

subject

Has Abstract

pub_date

1996-01-01 00:00:00

pages

85-90

issue

2

eissn

0887-8013

issn

1098-2825

pii

10.1002/(SICI)1098-2825(1996)10:2<85::AID-JCLA5>3.

journal_volume

10

pub_type

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