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Estradiol Blood Test, Free, LC/MS/MS

A Estradiol Blood Test, Free is used as a direct measure of free Estradiol in the blood.

Sample Report

Test Code: 36169

CPT Code: 82670,82681

Also Known As: High-Sensitivity Free Estradiol


Chromatography/Mass Spectrometry (LC/MS) • Equilibrium Dialysis

Specimen Type: Blood


No special preparation required.

Test Results:

5-14 days. May take longer based on weather, holiday or lab delays.


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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