What does 17-OHP mean?
17-hydroxyprogesterone is an adrenal steroid used to make cortisol and other hormones. It helps investigate congenital adrenal hyperplasia and some androgen-excess patterns.
What it shows and why it matters
17-OHP, or 17-Hydroxyprogesterone, is an adrenal steroid used to make Cortisol and other hormones. A raised result can help investigate congenital adrenal hyperplasia or an adrenal contribution to androgen excess. Time of day, age, menstrual stage, pregnancy and assay method affect the expected range, so the collection context matters.
How 17-OHP appears on your report
Look for 17-Hydroxyprogesterone (17-OHP). It may also be printed as 17-OHP. The result is normally shown in nmol/L, next to the reference interval used by the laboratory that ran the test.
Note the collection date before you compare it with anything, along with the context that matters for this marker: time of day, age, menstrual stage, pregnancy, stress, steroid medicines and assay method can change it. Morning collection context is often important.
17-OHP range in Australia
Vector shows an assay-dependent contextual tracking band of 0.0–6.0 nmol/L for 17-OHP. It is not a universal optimal target or clinical threshold; use the interval printed by the laboratory that performed the test.
This contextual band mirrors the app and the Vector Profile; the performing laboratory’s interval remains authoritative.
Interpretation limits
17-OHP screening depends on time, life stage and assay. A raised result may require a supervised confirmation pathway rather than interpretation against one universal cut-off.
The interval printed beside your result remains the authority for that specimen. Reference intervals, diagnostic thresholds, treatment targets and Vector's tracking bands answer different questions and should not be substituted for one another.
What to read alongside 17-OHP
A single marker rarely explains itself. These results are commonly interpreted together with 17-OHP, and Vector keeps them within reach of each other as your record grows.
When to discuss 17-OHP with a clinician
Discuss a raised result with a GP or endocrinologist. Repeat morning testing or a supervised stimulation test may be needed before any diagnosis is considered.
Tracking 17-OHP over time
One 17-OHP result is a single point. Import the report into Vector, check the extracted value, unit and collection date, and it becomes the start of a series instead — with each later report adding a dated point you can actually compare against.
Further reading
17-OHP is read the same way every other result on the report is. These two guides cover that method rather than this marker:
- How to read an Australian pathology report — A practical guide to dates, units, reference intervals and the context that belongs beside an Australian pathology result.
- Pathology report reference ranges: what they mean — Understand the laboratory interval, Australian guidance and the product context Vector adds to a result over time.
Common questions
What is a normal 17-OHP range in Australia?
Australia has no nationally harmonised reference interval for 17-OHP, so the range printed on your report varies with the laboratory and assay. Vector shows 0.0–6.0 nmol/L as an assay-dependent contextual tracking band, not a universal optimal target or clinical threshold. Always use the interval beside your own result.
How should the 17-OHP tracking band be interpreted?
Vector shows 0.0–6.0 nmol/L as an assay-dependent contextual band for 17-OHP. It is not a universal optimal target or clinical threshold. Interpret the result with the performing laboratory's interval, treatment and symptoms.
What unit is 17-OHP reported in on Australian pathology reports?
17-OHP is usually reported in nmol/L on Australian pathology reports. The performing laboratory prints a reference interval in the same unit beside the result, and that interval is the one that governs your individual result.
What can change your 17-OHP result?
Time of day, age, menstrual stage, pregnancy, stress, steroid medicines and assay method can change it. Morning collection context is often important.
What else is 17-OHP called?
17-Hydroxyprogesterone (17-OHP) may also appear as 17-OHP on a pathology report. Laboratories differ in the label they print, which is why Vector matches on several names for the same analyte.
Sources
- RCPA Manual: 17-hydroxyprogesteroneAustralian pathology reference for this test and related result context.
- Healthdirect: hormone testsGeneral consumer context for hormone testing and clinical follow-up.
Published 29 August 2026 · Updated 29 August 2026 · Author Vector