Progesterone
Progesterone is a female hormone that, after ovulation, prepares the uterus for a possible pregnancy and maintains early pregnancy. Its rise in the second half of the cycle confirms ovulation.
| Rating | Range |
|---|---|
| Good | below 90 nmol/L |
| Worth improving | 90 nmol/L and above |
This marker also has 8 age- or sex-specific range sets in the app — the table shows the general one.
Why it matters
Interpret according to the cycle phase.
If it’s low
Low progesterone during the expected high phase can mean failure to ovulate — a common cause of fertility problems and irregular cycles.
If it’s high
High progesterone in the second half of the cycle is expected (it confirms ovulation); outside this or markedly high requires context (pregnancy, more rarely something else).
What to do
The measurement should be on the right day (~7 days after ovulation). With fertility problems or irregular cycles, seek advice.
Read together with
Estradiol · FSH
Part of the guide: Hormones →
This content is for information only and is not a substitute for medical advice. Talk to your doctor about your results.
Your number, not the average
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