The short explanation
AMH is fairly stable across the menstrual cycle, so testing during a period usually does not change the result much. But different labs can use different test methods, and their results and reference ranges are not always directly comparable. That is a common reason two labs give different numbers. AMH can also be lower in women taking hormonal contraception and can vary a little from one test to the next. A doctor looks at the trend and at the antral follicle count on scan rather than one number.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- AMH estimates the number of eggs left, not their quality, and it does not predict exactly when you will conceive naturally. Women with a lower AMH can still conceive.
- It is most useful for planning fertility treatment, for example estimating how the ovaries may respond to stimulation.
- Where possible, repeat tests in the same lab, and take both reports to your doctor.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This answer cannot say which result is correct or what your AMH means for you. Your doctor will interpret it with your age, scan and history.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Which of my two AMH results should we go by?
- Should we do an antral follicle count scan as well?
- Does my AMH change how long we should try naturally?
- Is anything I take, like hormonal pills, affecting the result?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Book an appointment soon
- See a doctor within a few days if you have a positive test with pain or bleeding.
Raise it at a routine appointment
- Book a routine visit and take both reports with you.
Sources
The evidence this explanation is built on.
- Infertility NHS
- Infertility MedlinePlus (NIH)
- Infertility World Health Organization
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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