Free Estradiol (Sensitive)


First time customer? Read How Discounted Labs Works 

IMPORTANT NOTICE ABOUT DISCOUNTED LABS SERVICES: We currently serve the following states:

Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, North Carolina, New Mexico, Ohio, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Washington, and West Virginia.

Other states will be added in the coming months, so please subscribe to our newsletter on the website footer to be notified.

You will earn 104 Points for purchasing this product.

This test measures the free (unbound to SHBG or albumin) estradiol in blood. The test is performed using liquid chromatography/mass spectrometry (LC/MS).

This test uses liquid chromatography/mass spectrometry to accurately measure free estradiol, the portion of estradiol that is not bound by SHBG. 

Note: Studies on the effect of free estradiol blood levels in men are lacking. Only one reference concludes that free estradiol, not total, maybe a better predictor of bone density in older men (Bone Miner Res 2005;20:1334–1341.)

Some physicians are starting to use this test in men with low Sex Hormone Binding Globulin with symptoms of high estradiol.

For more information about estradiol, read our blog posts

Free Estradiol, Percent

Reference Ranges (%)

      Age                        Range

Adult Males                   1.7 - 5.4

Adult Females               1.6 - 3.6


Free Estradiol, Serum

Reference Ranges (pg/mL)

      Age                        Range

Adult Males                   0.2 - 1.5

Adult Females               0.6 - 7.1


Click here to find out how our process works.

IMPORTANT: Discounted Labs only serves these states: Find a Location 

Please read the following frequently asked questions before placing an order: FAQs



  1. Go to the "Find a Location" page to find the closest lab location. No need to make an appointment since walk-ins are welcomed. Once you have identified your closest location, go to step 2.

    NOTE: We serve all states in the U.S. except New York, New Jersey, and Rhode Island. Residents of those states need a written lab order from an in-state provider. Individuals cannot obtain a blood draw in neighboring states.
  2. Go to "Choose a Test" and add your selection (s) in the shopping cart. If you prefer to save money on bundled tests, we have created "Lab Test Panels" that can help you decide what to order.

  3. If you have a discount coupon code, add it to your cart.

  4. A $8 lab processing fee will be added to your total.

  5. Pay using a credit card.

  6. You will receive an order confirmation and instructions email on how to download your lab request.

  7. Print lab request form that you downloaded.

  8. Take that form to the closest Quest Diagnostics location with a picture ID. Get your blood drawn.

  9. You will receive an email when the results are ready for you to download.

    Note: You cannot place an order under someone else's profile. The profile person's name will appear on the lab order form.

    If you have questions, please review our FAQ Page.

    If you have further questions, please email [email protected].

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