title: A radioimmunoassay for plasma androstenedione using 125I tracer.
abstract: A radioimmunoassay for plasma androst-4-en-3,17-dione is described using ether extracts of plasma and 125I radioligand. The reagent is easily prepared by an established radiochemical method from androst-4-en-3,17-dione-6 beta-(carboxymethyl) thioether and 125I-histamine.
mesh_terms: D000735:Androstenedione / Q000097:blood*; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D008297:Male; D011863:Radioimmunoassay / Q000379:methods; D014316:Tritium
chemical_list: D007457:Iodine Radioisotopes; D014316:Tritium; D000735:Androstenedione