Estrogen (Estradiol) Concentration in Serum or Plasma

Why Is This Test Done?

Your healthcare provider may order an estradiol test to evaluate hormonal health, diagnose conditions like polycystic ovary syndrome (PCOS), check for hormonal imbalances before fertility treatments, or monitor symptoms of perimenopause or menopause. It can also be used to assess hormone replacement therapy effectiveness or evaluate conditions affecting hormone production, such as ovarian or pituitary disorders.

What Does the Test Involve?

A blood sample is taken from a vein in your arm. You may feel a slight pinch when the needle is inserted, but the procedure is usually quick and painless. The blood sample is then sent to a lab for analysis using an immunoassay method to measure estradiol concentration.

What Do Results Mean?

Results are typically reported in picograms per milliliter (pg/mL) or other standardized units. While reference ranges can vary slightly between labs, they generally provide a baseline for comparison to determine if your levels are within normal limits, low, or high for your situation.

What Are Common Reasons for Abnormal Results?

Low estradiol levels might indicate early menopause, ovarian dysfunction, or conditions like hypothyroidism. High estradiol levels could suggest hormonal imbalances, tumors, or certain medications affecting hormone metabolism. Always discuss any abnormal results with your healthcare provider for personalized interpretation.