Preparing for an Anti-Müllerian Hormone (AMH) Blood Test

Learn how to prepare for an AMH test, including fasting, timing, and factors that could affect your results.

Aug 8, 2026 3 min read

Anti-Müllerian hormone (AMH) is a substance produced by the ovarian follicles, the tiny sacs in your ovaries that contain eggs. An AMH blood test measures the level of this hormone in your blood, which can provide information about your ovarian reserve, or the number of eggs you have left. Understanding how to prepare for this test can help ensure accurate results.

What is the AMH Test and Why is it Important?

The AMH test is a blood test used primarily to assess a woman's ovarian reserve. This information can be crucial for those considering fertility treatments, as it helps predict how many eggs might be retrieved during a procedure like in vitro fertilization (IVF). Unlike other tests, AMH levels do not fluctuate significantly throughout the menstrual cycle, making it a reliable indicator of ovarian reserve at any time of the month.

How to Prepare for an AMH Test

Preparation for an AMH test is relatively straightforward. Unlike some other blood tests, fasting is not required, so you can eat and drink normally before the test. However, it's important to inform your healthcare provider about any medications or supplements you are taking, as some may influence hormone levels. Additionally, while the timing of the test is flexible, it's best to schedule it when you are not ill or stressed, as these conditions can potentially skew results.

Factors That Can Affect AMH Levels

Several factors can influence AMH levels, potentially affecting the test results. Age is a primary factor, as AMH levels naturally decline as a woman ages. Certain medical conditions, such as polycystic ovary syndrome (PCOS), can cause higher-than-normal AMH levels. On the other hand, conditions like premature ovarian failure or menopause can lead to lower levels. Lifestyle factors like smoking may also reduce AMH levels.

Understanding Your AMH Test Results

AMH test results are typically reported in nanograms per milliliter (ng/mL). While there is no universal "normal" range, higher AMH levels generally indicate a greater number of remaining eggs, while lower levels suggest a reduced ovarian reserve. It's important to discuss your specific results with your healthcare provider, as they can interpret what your AMH level means in the context of your overall health and fertility goals.

Frequently Asked Questions

Can I eat before an AMH test? Yes, you can eat and drink normally before an AMH test as fasting is not required.

Does the time of day affect AMH test results? No, AMH levels remain relatively stable throughout the day, so the time of day does not significantly affect the results.

Can stress affect AMH levels? While AMH levels are generally stable, extreme stress or illness may potentially impact hormone levels slightly, so it’s best to be in good health when taking the test.

Do birth control pills affect AMH levels? Most studies suggest that birth control pills do not significantly alter AMH levels, but it's always best to inform your healthcare provider about all medications you are taking.

Is the AMH test only for women? While primarily used to assess ovarian reserve in women, AMH tests can also be used in certain situations to evaluate male fertility or diagnose some medical conditions in children.

When to See a Doctor

If you are considering fertility treatments or have concerns about your reproductive health, discussing an AMH test with your healthcare provider can be beneficial. If you receive results that are significantly higher or lower than expected, it’s important to consult with your healthcare provider to understand what this might mean for your fertility and overall health.

Remember, this information is not a substitute for medical advice. Always consult with a healthcare provider for guidance specific to your health.

Read this in another language

Doctor reviews: 0 - pending

This explainer is queued for our doctor panel and hasn't been individually reviewed yet. It's general information, drawn from standard references - always confirm decisions with your own clinician.

Have your own lab results? Upload your report and get a clear, private AI explanation in minutes — free, in English, Russian or Hebrew.
Analyze my results
Want a verified MD opinion on your own report? From $25, 72-hour SLA. Licensed doctors review your file directly.
Browse doctors