[Determination of urinary estriol in pregnancy. I. Comparison of the gas-chromatographic and colorimetric methods].

The gas-chromatographic method is confronted with the amply used colorimetric method in the determination of the urinary oestriol. The two methods give practically the some results, even so the gas-chromatographic is to be preferred for its specificity, for salvaging accuracy, and for the possibility to receive hormonal profiles with only one determination.