January 18, 2026

Day 3 Testing for Fertility: Hormone & Ultrasound Insights

Day 3 testing measures key reproductive hormones (E2, FSH, LH, AMH) and antral follicle count to assess ovarian reserve and ovulatory function. Results are typically available same-day and help physicians create personalized fertility treatment plans. For example, AMH levels directly correlate with a woman’s egg supply, while FSH indicates ovarian response to stimulation.


Key Takeaways

Day 3 Testing Measures Core Fertility Hormones and Ovarian Activity

The test evaluates E2 (estrogen), FSH (follicle-stimulating hormone), LH (luteinizing hormone), and AMH (anti-Müllerian hormone) to determine ovulatory function and egg reserve. Antral follicle count via ultrasound adds anatomical and functional insights about ovarian activity.

Schedule Day 3 Testing on Cycle Day 1 for Accurate Results

Tests must occur on the third day of menstrual bleeding (day 3 of the cycle). Patients should contact their clinic on cycle day 1 to book the same-day procedure, ensuring timely results for treatment planning.

Insurance May Cover Day 3 Testing as Routine Diagnostic Workup

Many insurers classify day 3 testing as standard diagnostic care. Patients are advised to confirm coverage with their provider, though SGF reports frequent full coverage for this baseline fertility assessment.

Annual Day 3 Testing is Standard, Not Daily Monitoring

The procedure is typically conducted once annually at the start of fertility evaluations or treatment cycles. Repeat testing is uncommon unless results are abnormal or further monitoring is clinically indicated.

Abnormal Results May Trigger Repeat Testing or Advanced Diagnostics

Values outside normal ranges (e.g., low AMH or elevated FSH) could prompt physicians to recommend monthly retesting, ovarian reserve biomarker panels, or tailored treatment strategies to optimize success rates.


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