A Nonchromatographic Radioimmunoassay for 17-Hydroxyprogesterone
MIRIAM HAMI,
ARIEL ROSLER and
DAVID RABINOWITZ
Department of Chemical Endocrinology, Hadassah University Hospital Jerusalem, Israel
A radioimmunoassay is described for the measurement of 17-hydroxyprogesteronein human plasma. We have employed the principle of "immunologicpurification." 17-OHP and related steroids are bound to an excessof antiserum. Steroids with a low affinity for the antibodyare extracted by ether. The 17-OHP is subsequently freed fromantibody by acid hydrolysis and this extract is assayed by radioimmunoassay.(J Clin Endocrinol Metab40: 863, 1975)