[The radioimmunological determination of human placental lactogen with the RIO-PL-125I reagent kit].

The authors described the development of a radioimmunoassay for the determination of human placental lactogen (PL) in the blood serum of pregnant women. Methods of obtaining RIA components were developed: highly refined and stable agents of the labeled and unlabeled hormones, specific antisera and a highly effective separating agent. The test system and commercial kits were used for comparative determination of the blood PL concentration at various terms of pregnancy. Similar results were obtained. The above test system was laid in the basis of a commercial kit RIO-PL-125I (USSR).