ESTRADIOL(E2); SERUM

What this test checks

Measures estradiol, the most active form of estrogen. Levels change across the menstrual cycle.

Why do people get this test?

Used in fertility evaluation, irregular periods, menopause, and certain hormone treatments.

When you should consider this test

• Trouble conceiving
• Irregular or absent periods
• Menopause evaluation

How to prepare

Note the day of your menstrual cycle when tested.