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Inhibin A

Inhibin A

The Inhibin A diagnostic test measures the levels of inhibin A, a protein produced by the ovaries in women and the testes in men. Inhibin A plays a crucial role in regulating the production of follicle-stimulating hormone (FSH), a hormone responsible for the growth and development of eggs in women and sperm in men

In women, inhibin A levels can be useful in various medical scenarios. It's often part of the quad screen during pregnancy, used to assess the risk of certain chromosomal abnormalities in the fetus, including Down syndrome. Inhibin A levels are usually higher in women carrying a fetus with Down syndrome. Apart from pregnancy, inhibin A testing can be used to investigate ovarian function, and it may be ordered if a woman is having difficulty getting pregnant.

In men, inhibin A plays a role in regulating sperm production. Its measurement can be used in the evaluation of male infertility and certain testicular conditions.

Here are some frequently asked questions to help you understand more about the Inhibin A diagnostic test


  • Test NameInhibin A
  • Sample TypeBlood
  • Preparations RequiredThere are no specific instructions for this test. It doesn't require fasting, water consumption restrictions, or any specific preparation. Regular medications can be continued unless instructed otherwise by the healthcare provider.
  • Report Time2 days

Why would my doctor order an Inhibin A test?

Your doctor might order an Inhibin A test as part of a quad screen during pregnancy to evaluate the risk of certain chromosomal abnormalities in your baby. Outside of pregnancy, the test may be ordered to evaluate fertility in both men and women or to investigate certain conditions related to the ovaries or testes.

Does this test require any specific preparation?

No specific preparation is needed for the Inhibin A test. You do not need to fast, restrict your water intake, or stop any medications unless instructed by your healthcare provider.

Home Sample Collection Process
1
Book your convenient slot
Book your convenient slot
2
Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
3
Reporting of the sample at lab
Reporting of the sample at lab
4
Download Reports
Download Reports
Frequently Asked Questions

If you're pregnant, the Inhibin A test is usually done between the 15th and 20th weeks of pregnancy as part of the quad screen. For fertility evaluations or other medical conditions, your healthcare provider will guide you on the appropriate timing for the test.

The test measures the level of Inhibin A, a hormone that regulates the production of follicle-stimulating hormone (FSH), which is involved in egg and sperm development.

The frequency of testing depends on why the test is being done. For pregnant women, the Inhibin A test is typically done once, between the 15th and 20th weeks of pregnancy. For fertility evaluations or other conditions, your healthcare provider will guide you on how often the test should be repeated.

The normal values for Inhibin A vary depending on the laboratory performing the test, the individual's age, and the phase of a woman's menstrual cycle or stage of pregnancy. Your healthcare provider or lab will provide a reference range to interpret your results.

The Inhibin A test is a routine blood test and doesn't require any special precautions. You might experience slight discomfort during the blood draw, but this is typically minimal and short-lived.

Several factors can affect Inhibin A levels, including age, phase of the menstrual cycle, pregnancy, ovarian or testicular conditions, and certain medications.

You should consult with the doctor who ordered your test. This may be an obstetrician/gynecologist if the test was ordered during pregnancy, or a fertility specialist or endocrinologist if the test was ordered to evaluate fertility or hormone-related conditions.

The Inhibin A test is performed with a blood sample. A healthcare professional will draw blood from a vein, usually in your arm. The blood sample is then sent to a lab for analysis.

The Inhibin A test is a routine blood test and is generally safe. Risks are similar to those of any blood draw and might include slight pain or bruising at the needle site, fainting, or a small chance of infection.

No, the Inhibin A test does not predict the sex of the baby. It is primarily used to assess the risk of certain chromosomal abnormalities, including Down syndrome.

While the test can indicate an increased risk of Down syndrome or other chromosomal abnormalities, it is not diagnostic. If the test indicates a high risk, your healthcare provider may recommend further diagnostic tests, such as amniocentesis or chorionic villus sampling, which can provide a definitive diagnosis.

If your Inhibin A levels are high, your healthcare provider will guide you on the next steps, which may include additional testing or consultation with a specialist. It's important to remember that high levels don't necessarily mean there is a problem; they simply indicate a need for further investigation.

No, the Inhibin A test requires a blood sample that needs to be drawn by a healthcare professional and analyzed in a laboratory. It is not available as a home test.

While there isn't specific research suggesting lifestyle modifications can directly impact your Inhibin A levels, maintaining a healthy lifestyle, including regular exercise and a balanced diet, is always beneficial for overall health and wellness.

Stress can influence various hormone levels in your body. While there's no direct evidence linking stress to Inhibin A levels, managing stress through relaxation techniques, meditation, and healthy lifestyle habits is always beneficial.

Depending on the reason for testing, your healthcare provider may also order other tests. For example, during pregnancy, Inhibin A is often part of the quad screen, along with tests for alpha-fetoprotein, human chorionic gonadotropin (hCG), and estriol.

Yes, certain medications may affect your Inhibin A levels. It's crucial to inform your healthcare provider about any medications, supplements, or herbal remedies you're taking.

The frequency of this test depends on your specific health circumstances and your doctor's recommendation. If you're pregnant, it's typically conducted during the second trimester as part of routine prenatal testing. If it's being used to monitor a certain health condition, your doctor will provide guidance on how often it should be done.

In sum, the Inhibin A test can provide essential information to healthcare professionals, assisting them in making informed decisions about your health and care. It's crucial to have open communication with your healthcare provider about the test, its results, and what they mean for your health journey.

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