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About This Test

Department: Biochemistry


  • Clotted serum (red top)

Add-on requests are accepted


Turnaround Time:

Within 24 hours

Indication for testing

Assessment of ovulation during fertility investigations.


Sampling requirements

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.



Other Comments:

For more information, please see: Progesterone - Lab Tests Online