Progesterone [Serum]

. The ideal timing for measuring progesterone can depend on the specific context and the purpose of the assessment:
# For women with regular menstrual cycles: Progesterone levels should be measured approximately 7 days after ovulation, typically around day 21 of a 28-day cycle, when progesterone is at its peak in the luteal phase. However, the exact timing may vary based on your menstrual cycle length, so consult your doctor to confirm the best day for testing.
# For women undergoing fertility treatments: Follow your doctor’s specific instructions regarding the timing of the test based on your treatment schedule.
# For post-menopausal women: The test can be done at any time.
. If you are taking any hormonal medications (such as progesterone supplements, birth control pills, or hormone replacement therapy), inform your doctor as these can affect progesterone levels. Your doctor may recommend stopping them temporarily before the test, depending on the purpose of the test.
. It is advisable to avoid strenuous physical activity before the test.

After 2 hours 50 minutes
After cutoff: 8:50 AM next day