THE ASSAY OF ANDROSTERONE BY THE CHICK COMB WEIGHT METHOD AND THE RENAL EXCRETION OF ANDROGENS BY THE CEBUS MONKEY

Abstract
A linear relationship exists between the wt. of the comb of the baby chick and the logarithm of the dose of androsterone applied locally in oil soln. Groups of 11-20 birds received from 3.5-168 [gamma] of the hormone and it was found that the slopes of the straight lines differ significantly only for doses above 50 [gamma]. Following the steps of Bliss and Marks, this test was employed for assaying the androgenic potency of urinary extracts of 6 adult, [male] [male], South American monkeys of the genus Cebus, weighing 2.5-4.5 kg. The renal excretion of androgens by this primate was found very low, equivalent to 194 [plus or minus] 14 [gamma] of "androsterone"/l.