[Radioimmunoassay of synthetic steroid hormones].

The problem and recent progress of radioimmunoassay for various kinds of synthetic steroid hormones are reviewed. The specificity and sensitivity depend mostly on the position of synthetic antigen (hemisuccinate or oxime). Using good antibodies, a direct radioimmunoassay without extraction procedures of samples is available. A simplified method is required for the monitoring of synthetic steroids to know the effects and side effects.