What Is an Estradiol Test?

Estradiol (E2) is the primary estrogen, produced mainly by the ovaries.

Normal Ranges

  • Follicular: 19–144 pg/mL
  • Ovulation: 64–357 pg/mL
  • Luteal: 56–214 pg/mL
  • Postmenopausal: below 10
  • Men: 10–50 pg/mL

When Tested

  • Fertility evaluation
  • IVF monitoring
  • Menopause confirmation
  • HRT monitoring
  • PCOS evaluation
Source: Endocrine Society, NLM MedlinePlus.

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