Estradiol Blood Test, Free, LC/MS/MS
The Estradiol (E2) Blood Test is a test that will check the estradiol level in the blood. The Estradiol Test is often referred to as the E2 Test. Although this is the most commonly ordered fertility test to check estradiol levels in women that have infertility problems and also for in vitro fertilization support, it is also ordered to monitor estradiol levels in fertile females and males.
Much of estradiol is bound to proteins. The unbound portion and estradiol bound to proteins with low affinity reflect the free concentration. The free estradiol may better correlate with medical conditions than the total estradiol concentrations.
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