Abstract

Urine samples to be assayed for estrone, estradiol-17β, and estriol are processed as usual: hydrolysis, ether extraction, and saponification, as well as partition between toluene and alkali. The samples are purified further, fractionated, and assayed by connecting columns containing Sephadex LH-20 to the sample line of an automated system for fluorometric assay. With this procedure, a sample can be fractionated and assayed every 45 min.

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