Indication for testing
Assessment of ovulation during fertility investigations.
Samples should be taken in the mid luteal phase, 7 days prior to the start of menstrual period e.g. on day 21 of a 28‑day cycle, or on 28 of a 35‑day cycle.
If cycles are irregular or prolonged consider measuring progesterone on a weekly basis until the onset of menses.
Please state day of cycle on the request card if known.
Serum progesterone >30 nmol/L is good evidence of successful ovulation.
For more information, please see: Progesterone - Lab Tests Online
Last updated: Tuesday 22nd February 2022
- Clotted serum (red top)
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