[Urinary excretion of 17-ketosteroids studied by gas chromatography in the healthy adult: distribution of values].

The level of different urinary 17-ketosteroids were assayed using a method requiring an enzymatic hydrolysis and a solvolysis, a separation by gas-chromatography on OV 225 (cyanopropylsilicone) and a detection by flame ionisation. The method has been discuted. Statistical study of the results obtained in 89 healthy and ambulatory subjects (divided in 4 groups according to sex and age) has shown a log-normal distribution of urinary excretions.