Comparison of a new immunoturbidometric assay of human serum lipoprotein (a) to the ELISA and the IRMA methods.

In the present work we have tested a new immunoturbidometric (IT) lipoprotein(a) (Lp(a)) assay and compared it with two other Lp(a) assay systems (IRMA and ELISA) commonly used in clinical chemistry laboratories. In addition, we have examined the effects of long-term storage and plasminogen on the results of Lp(a). Intra-assay and inter-assay coefficients of variation of the IT method were from 1.