| abstract |
The invention is an improvement in a heterogeneous immunoassay, and reagent therefore, for the determination of a substance in a blood serum or plasma sample, such as a parnter of an immune reaction, in which one of the reaction partners is adsorbed on a solid carrier, the improvement comprises adding a detergent to the incubation medium of the reaction, in an amount of 0.0001 to 0.01% (w/v) to reduce interferences from the serum or plasma. |