A simple and rapid nephelometric procedure for fibronectin.

A nephelometric assay (Beckman ICS) for the measurement of plasma fibronectin using commercially available reagents (Boehringer) is described. The assay is simple, rapid and cheap and has a high degree of specificity. The within-run variation was between 4.3 and 7.8%. Only 30 microL of antiserum is used for one measurement, instead of 100 microL used with the turbidimetric method.