Sentences with phrase «unconjugated estriol»

Levels of unconjugated estriol (E3, considered protective and the weakest form of estrogen) are sometimes available in serum tests.

While measurement of unconjugated estriol may be helpful in terms of evaluating a woman's risk of cancer (an «Estrogen Quotient» [estriol divided by the sum of estrone and estradiol] of ≤ 1.0 suggests lower cancer risk), its usefulness is significantly hampered because 90 % of estriol is conjugated.