Optimal ovulation | |
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1. Measure both estradiol and progesterone | ✔ |
2. Draw the serum level 6–9 days after the ovulation marker (not day 21) | ✔ |
3. Assess optimal levels, not threshold level | ✔ |
4. Confirm mature follicle size and follicle rupture by ultrasound in at least one cycle | ✔ |