Last Updated 1 December 2024

What is Inhibin B

Inhibin B is a hormone secreted by the gonads (male testes and female ovaries) and plays a pivotal role in the human body's reproductive system. It belongs to the transforming growth factor-beta superfamily. And it is involved in various functions such as:

  • Regulating the Follicle Stimulating Hormone (FSH): Inhibin B helps regulate the production of FSH, which plays a crucial role in managing the reproductive system.
  • Serving as a Marker for Ovarian Reserve: In women, the levels of inhibin B can indicate the number of viable eggs left in the ovaries. This can be used to assess fertility and potential onset of menopause.
  • Helping in Diagnosing Certain Conditions: Abnormal levels of inhibin B can indicate certain conditions such as polycystic ovary syndrome, ovarian failure, and certain types of tumors.

While the level of inhibin B varies throughout a woman's menstrual cycle, it generally peaks around the middle of the cycle. In men, inhibin B levels are typically constant and serve as a marker for Sertoli cell function, which plays a crucial role in sperm production.

Abnormal levels of inhibin B in the body may lead to various health issues. High levels can lead to conditions such as ovarian cancer and granulosa cell tumors. On the other hand, low levels might indicate poor ovarian reserve in women and reduced sperm production in men.

Inhibin B tests are usually performed through a blood sample. This test helps in diagnosing and managing various reproductive health conditions. It's a vital tool for fertility specialists and endocrinologists in treating and managing patients with reproductive health issues.


When is Inhibin B Required?

Inhibin B is a hormone primarily produced in males by the testes and in females by the ovaries. It plays a significant role in human reproduction and fertility. The requirement for Inhibin B testing can be grouped into three primary cases:

  • Infertility Diagnosis: Inhibin B levels are often checked during infertility evaluations. Both men and women who are having difficulty conceiving might have their Inhibin B levels tested. The hormone plays a crucial role in regulating the production of sperm in men and the growth and release of eggs in women. Therefore, abnormal levels could potentially indicate fertility issues.
  • Follicle Development: In women, Inhibin B level is a potential indicator of the number of developing follicles in the ovaries. It helps fertility specialists to monitor and assess the ovarian reserve, thus guiding the treatment protocols for conditions like Polycystic Ovary Syndrome (PCOS).
  • Ovarian Tumor Marker: Elevated levels of Inhibin B can indicate the presence of certain types of ovarian tumors, especially in postmenopausal women. Hence, it is often used as a tumor marker in the diagnosis and monitoring of ovarian cancer.

Who Requires Inhibin B?

Inhibin B testing is not a standard part of routine health check-ups. It is typically required for certain groups of people under specific circumstances. They include:

  • Infertility Patients: Men and women who are having difficulty conceiving might require Inhibin B testing as part of their fertility evaluation.
  • Women Undergoing Fertility Treatments: In women undergoing fertility treatments such as In Vitro Fertilization (IVF), Inhibin B levels are monitored to assess ovarian response.
  • Ovarian Cancer Patients: Women diagnosed with ovarian cancer might require regular Inhibin B testing to monitor the effectiveness of treatment and to detect any possible recurrence.

What is Measured in Inhibin B?

Inhibin B testing is a blood test that measures the level of Inhibin B hormone in the blood. The following are included in the measurements:

  • Baseline Inhibin B Levels: The test measures the baseline (or resting) level of Inhibin B in the blood. This provides an indication of the number of functioning follicles in the ovaries (in women) or the functioning of the testes (in men).
  • Fluctuating Levels of Inhibin B: In women, the levels of Inhibin B fluctuate during the menstrual cycle, reaching a peak around the time of ovulation. This fluctuation can be measured to assess ovarian function.
  • Elevated Levels of Inhibin B: The test can measure elevated levels of Inhibin B, which may indicate the presence of certain types of ovarian tumors or testicular tumors.

What is the Methodology of Inhibin B?

  • Inhibin B is a hormone produced by the granulosa cells of the ovarian follicles in females and Sertoli cells in males. It is primarily used to estimate the ovarian reserve in females and spermatogenesis in males.
  • The methodology of Inhibin B involves a blood test. The levels of Inhibin B in the blood are indicative of the ovarian or testicular function. In women, it can help assist in the diagnosis of polycystic ovarian syndrome, premature ovarian failure, and other fertility-related issues. In men, it can be used to determine the cause of infertility.
  • The Inhibin B test is typically performed using the enzyme-linked immunosorbent assay (ELISA) technique. This test measures the amount of Inhibin B in the blood by detecting the reaction of the Inhibin B in the sample with specific antibodies.
  • The Inhibin B levels are measured in pg/mL (picograms per milliliter) and the normal range varies depending on the individual's age and sex.

How to Prepare for Inhibin B?

  • Preparation for the Inhibin B test is relatively straightforward. As it is a blood test, it usually requires no special preparation. However, it's always a good idea to inform your doctor about any medications or supplements you are currently taking as some of these may affect the test results.
  • The test is typically done in the morning and it is recommended to fast for 8-10 hours prior to the test. This is because food intake can sometimes affect hormone levels.
  • It is also advised to avoid any strenuous physical activities before the test as they can also impact hormone levels.
  • Women should ideally have the test done on the third day of their menstrual cycle as Inhibin B levels can fluctuate throughout the cycle.

What Happens During Inhibin B?

  • During the Inhibin B test, a healthcare professional will take a blood sample from a vein in your arm using a small needle. After the needle is inserted, a small amount of blood is collected into a test tube or vial.
  • You may feel a little sting when the needle goes in or out. This is usually the only discomfort you will experience during the test.
  • The blood sample is then sent to a laboratory. The laboratory will analyze the sample using the ELISA technique to measure the amount of Inhibin B in the blood.
  • After the test, you may have a small bruise where the needle was inserted, but you should be able to return to your usual activities immediately.
  • The results of the test are usually available within a few days. Your doctor will discuss the results with you and explain what they mean in terms of your fertility status or any other health conditions you may have.

What is Inhibin B Normal Range?

Inhibin B is a hormone produced by the ovaries in women and the testes in men. It plays a significant role in controlling the production of follicle-stimulating hormone (FSH) and is often used as an indicator of ovarian or testicular function.

  • The normal range of Inhibin B varies by age and sex. However, generally, in adult men, it ranges from 140-300 pg/mL. It's noteworthy that in men, the Inhibin B level remains relatively constant throughout life.
  • In women, the normal range of Inhibin B fluctuates depending on the menstrual cycle stage. In the early follicular phase, the normal range is 45-80 pg/mL. In the mid-cycle phase, it can reach up to 150-200 pg/mL.

What are Reasons for Abnormal Inhibin B Normal Range?

Abnormal levels of Inhibin B can indicate potential health issues. Below are some reasons for abnormal Inhibin B levels:

  • Lower than normal levels of Inhibin B in men may indicate issues with testicular function, such as reduced sperm production or testicular failure.
  • In women, lower levels of Inhibin B can indicate diminished ovarian reserve, indicating a reduced number of eggs available for fertilization.
  • Higher levels of Inhibin B in men may be an indicator of testicular cancer. In women, it could indicate ovarian tumors or polycystic ovary syndrome (PCOS).

How to Maintain Normal Inhibin B Range?

Maintaining a normal Inhibin B range can be achieved through various means:

  • Maintain a healthy lifestyle: Regular exercise, a balanced diet, and avoiding harmful substances like tobacco and excessive alcohol can help maintain hormonal balance, including Inhibin B.
  • Regular check-ups: Regular health check-ups can help monitor Inhibin B levels and ensure they stay within the normal range. Any abnormalities can be detected early and managed effectively.
  • Medication: In some cases, medications may be prescribed to regulate Inhibin B levels.

Precautions and Aftercare Tips Post Inhibin B Test

After undergoing an Inhibin B test, it's essential to take necessary precautions and aftercare:

  • Follow-up: Arrange a follow-up appointment with your healthcare provider to discuss the results of the test and any necessary next steps.
  • Medication: If your Inhibin B levels are not within the normal range, your doctor may prescribe medication. It's crucial to follow the medication schedule as instructed.
  • Lifestyle modifications: Depending on the results of your Inhibin B test, lifestyle modifications may be recommended. These could include changes in diet, exercise routines, and stress management techniques.

Why Book with Bajaj Finserv Health?

There are numerous reasons why you should consider booking with Bajaj Finserv Health. These include:

  • Precision: Labs recognized by Bajaj Finserv Health employ state-of-the-art technologies to ensure you receive the most precise results.
  • Cost-effectiveness: Our individual Diagnostic tests and services are thorough and won't put a strain on your budget.
  • Home Sample Collection: We offer the convenience of having your samples collected from your home at a time that suits you.
  • Nationwide Availability: Regardless of your location in the country, our medical test services are accessible.
  • Convenient Payment Methods: You can choose from our available payment options, be it cash or digital.

Note:

This is not medical advice, and this content should only be considered for informational purposes only. Consult with your healthcare provider for individual medical guidance.

Frequently Asked Questions

How to maintain normal Inhibin B levels?

How to maintain normal Inhibin B levels?

What factors can influence Inhibin B Results?

What factors can influence Inhibin B Results?

How often should I get Inhibin B done?

The frequency of Inhibin B testing depends on individual circumstances and should be determined by your healthcare provider. However, it is generally recommended to have regular health check-ups, which may include Inhibin B testing, especially if you have risk factors or symptoms associated with abnormal Inhibin B levels.

What other diagnostic tests are available?

Besides Inhibin B, there are many other diagnostic tests available to assess reproductive health. These include FSH (follicle-stimulating hormone), LH (luteinizing hormone), estradiol, and testosterone tests. Other imaging tests such as ultrasound and MRI can also be used to examine the reproductive organs for any abnormalities.

What are Inhibin B prices?

The price of Inhibin B tests can vary widely depending on the lab and location. It's advisable to call your local labs for pricing details. Some insurance companies may cover the cost of the test as part of a comprehensive health check-up. Always ensure to check with your insurance provider for coverage details.