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Ovarian Inhibin A (Serum)

Published: August 9, 2026Updated: August 16, 2026

This blood test measures the levels of inhibin A, a hormone produced by the ovaries that plays a role in regulating female reproductive function.

Quick summary

["Inhibin A helps assess ovarian reserve and fertility potential."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
31546-5
Short code
Ovary IgG Ser-aCnc
Synonyms
Ovary IgG Ser-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order an inhibin A test to evaluate ovarian health, especially if you’re undergoing fertility treatment, experiencing irregular menstrual cycles, or investigating symptoms like infertility or early menopause.

Who Might Need This Test?

Commonly recommended for women planning pregnancy, those with suspected ovarian dysfunction, or those undergoing ovarian stimulation for fertility treatments.

What to Expect Before the Test

No special preparation is needed. You’ll have a simple blood draw, usually taken from your arm. The test is typically done in the morning for consistency.

What Does the Test Result Mean?

Results are interpreted by your provider based on your age, medical history, and symptoms. Lower levels may suggest reduced ovarian reserve, while higher levels could indicate certain ovarian conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Inhibin A serves as a biomarker for ovarian function. It can help identify early signs of diminished ovarian reserve, which is critical for fertility planning. Elevated levels may also be associated with polycystic ovary syndrome (PCOS) or other ovarian pathologies.

Short name

Inhibin A

Frequently asked questions

What is inhibin A, and how does it relate to fertility?
Inhibin A is a hormone produced by the ovaries that helps regulate follicle development. It’s often used alongside other tests like AMH (anti-Müllerian hormone) to assess ovarian health and fertility potential.
How often should I get this test?
Your provider will determine the frequency based on your specific needs, such as fertility treatment cycles, symptoms, or age-related concerns. Follow-up testing may be recommended every few months or as part of a monitoring plan.
Can lifestyle changes affect inhibin A levels?
While diet, exercise, and stress management can influence overall health, there’s limited evidence that they directly impact inhibin A levels. Always discuss any concerns with your healthcare provider.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy