What Progesterone tells you
Hormones are chemical messengers involved in energy, mood, body composition, and reproductive health. This group covers the key hormones a clinician may review when looking at these areas.
Which Honed panels include Progesterone
Progesterone is measured in the Hormone Panel. Every sample is collected at a pathology collection centre and processed at a NATA-accredited laboratory against RCPA reference ranges, with personalised plain-English commentary in your secure online report.
Why Progesterone matters
Progesterone is a steroid hormone produced primarily by the ovaries in women (after ovulation) and in smaller amounts by the adrenal glands and testes in men. In women, progesterone is crucial for maintaining pregnancy, regulating the menstrual cycle, supporting bone health, and modulating mood and sleep. In men, progesterone levels are low but play roles in prostate health and as a substrate for other hormones. Progesterone varies dramatically across the menstrual cycle in women.
The range explained
Low levels
Low progesterone in women (below 30 nmol/L during the luteal phase) may indicate anovulation (cycles without ovulation), insufficient corpus luteum production, or luteal phase defects. In men, levels are naturally very low (below 2 nmol/L). A clinician interprets this within the menstrual cycle context.
Normal range
Reference ranges: women 4–20 nmol/L (follicular phase), 30–100 nmol/L (luteal phase); men <2 nmol/L. Luteal phase levels reflect adequate ovulation and corpus luteum function.
High levels
Elevated progesterone in women (above 100 nmol/L in luteal phase) is rare without exogenous hormone use. In men, elevated progesterone is unusual and may warrant investigation.
What affects Progesterone
- Training: Intense training without adequate recovery can impair ovulation in women, reducing luteal progesterone. Balanced training and recovery support ovulatory cycles.
- Nutrition: Adequate energy, fat, and cholesterol support progesterone production. Undereating or very low body fat can prevent ovulation.
- Sleep: Sleep supports ovulation and corpus luteum function. Poor sleep can impair progesterone production.
- Stress: Chronic stress can suppress ovulation through elevated cortisol and CRH, reducing progesterone. Stress management supports reproductive hormones.
When to retest
In women, testing during the luteal phase (7–10 days post-ovulation) is essential for accurate interpretation. Every 12 weeks when tracking reproductive health; every 12 months otherwise.
Why athletes care
Female athletes monitor progesterone because its level affects recovery, mood, and training tolerance across the menstrual cycle. Higher luteal progesterone supports recovery and bone health.
Related hormones markers
FAQ
What does the Progesterone blood test measure?
A reproductive hormone present at higher levels in women and lower levels in men. In women it varies across the menstrual cycle and is interpreted in that context.
Which Honed Health panels include Progesterone?
Progesterone is included in the Hormone panel.
What unit is Progesterone measured in?
Progesterone is reported in nmol/L, measured at NATA-accredited laboratories against RCPA reference ranges, with personalised plain-English commentary in your secure report.