A note of caution on the lack of specificity of the Porter-Silber reaction for 17,21-dihydroxy-20-ketosteroids.
D001826:Body Fluids; D007664:Ketosteroids; D012680:Sensitivity and Specificity; D013256:Steroids / Q000652:urine*; D014556:Urine
D007664:Ketosteroids; D013256:Steroids
STEROIDS/in urine; URINE