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<span>Progesterone Test</span>
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<span class="page-url print-only">URL of this page: https://medlineplus.gov/lab-tests/progesterone-test/</span>
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<h1>Progesterone Test</h1>
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<section><div class="mp-content"><h2>What is a progesterone test?</h2>
<p>A progesterone test measures the level of progesterone in a sample of your blood. Progesterone is a <a data-tid="1499" href="https://medlineplus.gov/hormones.html">hormone</a> that's made mainly by the ovaries, which are two glands in the female reproductive system that contain eggs.</p>
<p>Each month, progesterone prepares your uterus for <a data-tid="368" href="https://medlineplus.gov/pregnancy.html">pregnancy</a>. During a normal <a data-tid="325" href="https://medlineplus.gov/menstruation.html">menstrual cycle</a>, an ovary releases an egg and your progesterone levels begin to rise. Progesterone makes the lining of your uterus grow thicker so that a fertilized egg can attach (implant) inside of the uterus and grow into a baby.</p>
<p><strong>If you don't become pregnant</strong>, your progesterone levels will fall. The lining of your uterus will become thinner again. When your uterus starts to get rid of the extra blood and tissue, your menstrual period will begin.</p>
<p><strong>If you become pregnant</strong>, progesterone levels will continue to rise to about 10 times higher than usual to support the pregnancy. High levels of progesterone prevent the uterus from contracting (squeezing) and causing <a data-tid="6234" href="https://medlineplus.gov/pretermlabor.html">pre-term labor</a>. Much of the progesterone you need for a healthy pregnancy is made by the placenta. The placenta is the organ that grows in the uterus to provide nutrients and oxygen to the unborn baby.</p>
<p>A progesterone test can help show whether low progesterone levels are causing <a data-tid="5654" href="https://medlineplus.gov/femaleinfertility.html">female infertility</a> (problems getting pregnant after a year of trying) or problems during pregnancy. The test may also help diagnose certain <a data-tid="128" href="https://medlineplus.gov/adrenalglanddisorders.html">problems with the adrenal glands</a> that may cause high levels of progesterone in both females and males.</p>
<p>Other names: serum progesterone, progesterone blood test, PGSN</p></div>
</section>
<section><div class="mp-content"><h2>What is it used for?</h2>
<p>A progesterone test may be used to help:</p>
<ul>
<li>Find the cause of female infertility.</li>
<li>Check to see if fertility treatments are working.</li>
<li>Find out your risk of a <a data-tid="515" href="https://medlineplus.gov/miscarriage.html">miscarriage</a> (loss of a pregnancy before 20 weeks).</li>
<li>Diagnose an <a data-tid="5811" href="https://medlineplus.gov/ectopicpregnancy.html">ectopic pregnancy</a>, which is a fertilized egg that tries to grow outside of the uterus. The egg cannot grow into a baby when it's in the wrong place. It must be removed to avoid damage to your organs. This can be a medical emergency.</li>
<li>Check the health of a <a data-tid="1105" href="https://medlineplus.gov/healthproblemsinpregnancy.html">high-risk pregnancy</a>.</li>
<li>Diagnose <a data-tid="348" href="https://medlineplus.gov/ovariancancer.html">ovarian cancer</a> or problems with your adrenal glands. Normally, your adrenal glands make small amounts of progesterone. High levels of progesterone may be a sign of an adrenal gland disorder in both females and males.</li>
</ul></div>
</section>
<section><div class="mp-content"><h2>Why do I need a progesterone test?</h2>
<p>You may need a progesterone test if:</p>
<ul>
<li>You are having trouble getting pregnant. A progesterone test can help your health care provider see if your ovaries are releasing eggs (ovulating) normally.</li>
<li>You are having fertility treatments.</li>
<li>You are having abnormal bleeding when you're not pregnant.</li>
<li>You are pregnant and:
<ul>
<li>You're having progesterone therapy to prevent a miscarriage.</li>
<li>Your provider wants to check the health of your pregnancy because you have a higher risk for miscarriage or other pregnancy complications.</li>
<li>You have signs of a miscarriage or ectopic pregnancy, such as cramps or bleeding</li>
</ul>
</li>
</ul></div>
</section>
<section><div class="mp-content"><h2>What happens during a progesterone test?</h2>
<p>A health care 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 will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.</p>
</div>
</section>
<section><div class="mp-content"><h2>Will I need to do anything to prepare for the test?</h2>
<p>You usually don't need any other preparations for a progesterone test. In certain cases, you may need to know the first day of your last menstrual period. Your provider will tell you if you need to stop taking any medicines before the test. But never stop taking medicine unless your provider tells you.</p></div>
</section>
<section><div class="mp-content"><h2>Are there any risks to the test? </h2>
<p>There is very little risk to having a blood test. You may have slight pain or bruising at the spot where the needle was put in, but most symptoms go away quickly.</p></div>
</section>
<section><div class="mp-content"><h2>What do the results mean?</h2>
<p>The meaning of your test results depends on:</p>
<ul>
<li>Why you had the test</li>
<li>Where you were in your menstrual cycle when your blood sample was taken</li>
</ul>
<p><strong>High progesterone levels:</strong></p>
<ul>
<li><strong>When you're not pregnant</strong> may be linked to:
<ul>
<li>A <a data-tid="349" href="https://medlineplus.gov/ovariancysts.html">cyst on your ovaries</a></li>
<li><a data-tid="348" href="https://medlineplus.gov/ovariancancer.html">Ovarian cancer</a></li>
<li><a data-tid="128" href="https://medlineplus.gov/adrenalglanddisorders.html">Adrenal gland problems</a>, including adrenal gland cancer, or an inherited disorder called congenital adrenal hyperplasia (CAH)</li>
</ul>
</li>
<li><strong>Higher than expected progesterone levels when you are pregnant</strong>, may mean you're having two or more babies.</li>
</ul>
<p>High progesterone levels may also be a sign of a molar pregnancy, which is an abnormal growth of tissue in the uterus. It's caused by a fertilized egg with such severe genetic problems that it cannot become a baby. The growth can turn into cancer and must be removed.</p>
<p><strong>Low progesterone levels:</strong></p>
<ul>
<li><strong>When you're not pregnant</strong>, may be linked to:
<ul>
<li>Not ovulating normally</li>
<li>Not having a menstrual period (amenorrhea)</li>
</ul>
</li>
<li><strong>When you're pregnant</strong>, may be linked to:
<ul>
<li>Ectopic pregnancy</li>
<li>Miscarriage or a high risk of miscarriage</li>
<li><a data-tid="1508" href="https://medlineplus.gov/highbloodpressureinpregnancy.html">Pre-eclampsia</a></li>
</ul>
</li>
</ul>
<p>Your provider can explain what your test results say about your health.</p>
<p>Learn more about <a data-pid="806" href="https://medlineplus.gov/lab-tests/how-to-understand-your-lab-results/">laboratory tests, reference ranges, and understanding results</a>.</p></div>
</section>
<section><div class="mp-content"><h2>Is there anything else I need to know about a progesterone test?</h2>
<p>Because progesterone levels change throughout your pregnancy and menstrual cycle, you may need to be tested several times.</p></div>
</section>
<section><div class="mp-refs mp-content"><h2>References</h2>
<ol>
<li>Cable JK, Grider MH. Physiology, Progesterone. [Updated 2022 May 8; cited 2022 Jun 21]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: <a href="https://www.ncbi.nlm.nih.gov/books/NBK558960/" target="bibliowin">https://www.ncbi.nlm.nih.gov/books/NBK558960/</a></li>
<li>Mayo Clinic: Mayo Medical Laboratories [Internet]. Mayo Foundation for Medical Education and Research; c1995–2012. Test ID: PGSN: Progesterone Serum: Overview; [cited 2022 Jun 21]; [about 2 screens]. Available from: <a href="https://www.mayomedicallaboratories.com/test-catalog/Overview/8141" target="bibliowin">https://www.mayomedicallaboratories.com/test-catalog/Overview/8141</a></li>
<li>Merck Manual Consumer Version [Internet]. Kenilworth (NJ): Merck &amp; Co. Inc.; c2022. Overview of the Female Reproductive System; [reviewed 2022 Apr; cited 2022 Jun 21]; [about 2 screens]. Available from: <a href="https://www.merckmanuals.com/home/women-s-health-issues/biology-of-the-female-reproductive-system/overview-of-the-female-reproductive-system" target="bibliowin">https://www.merckmanuals.com/home/women-s-health-issues/biology-of-the-female-reproductive-system/overview-of-the-female-reproductive-system</a></li>
<li>Merck Manual Consumer Version [Internet]. Kenilworth (NJ): Merck &amp; Co. Inc.; c2022. Quick Facts: Ectopic Pregnancy; [reviewed 2021 Jun; cited 2022 Jun 21]; [about 2 screens]. Available from: <a href="https://www.merckmanuals.com/home/quick-facts-women-s-health-issues/complications-of-pregnancy/ectopic-pregnancy" target="bibliowin">https://www.merckmanuals.com/home/quick-facts-women-s-health-issues/complications-of-pregnancy/ectopic-pregnancy</a></li>
<li>Testing.com [Internet]. Seattle (WA).: OneCare Media; c2022. Progesterone; [modified 2021 Nov 9; cited 2022 June 21]; [about 12 screens]. Available from: <a href="https://www.testing.com/tests/progesterone/" target="bibliowin">https://www.testing.com/tests/progesterone/</a></li>
<li>UF Health: University of Florida Health [Internet]. University of Florida; c2022. Serum Progesterone: Overview; [updated 2019 Mar 28; cited 2022 Jun 21]; [about 2 screens]. Available from: <a href="https://ufhealth.org/serum-progesterone" target="bibliowin">https://ufhealth.org/serum-progesterone</a></li>
<li>University of Rochester Medical Center [Internet]. Rochester (NY): University of Rochester Medical Center; c2022. Health Encyclopedia: Progesterone; [cited 2022 Jun 21]; [about 4 screens]. Available from: <a href="https://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=167&amp;ContentID=progesterone" target="bibliowin">https://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=167&amp;ContentID=progesterone</a></li>
<li>UW Health [Internet]. Madison (WI): University of Wisconsin Hospitals and Clinics Authority; c2022. Health Information: Progesterone: Results; [current 2022 Feb 23; cited 2022 Jun 213]; [about 6 screens]. Available from: <a href="https://patient.uwhealth.org/healthwise/article/en-us/hw42146" target="bibliowin">https://patient.uwhealth.org/healthwise/article/en-us/hw42146</a></li>
<li>WomensHealth.gov [Internet]. Washington DC: Office on Women's Health, U.S. Department of Health and Human Services; Menstrual Cycle: Your Menstrual Cycle; [updated 2021 Feb 22; cited 2022 Jun 21]; [about 4 screens]. Available from: <a href="https://www.womenshealth.gov/menstrual-cycle/your-menstrual-cycle" target="bibliowin">https://www.womenshealth.gov/menstrual-cycle/your-menstrual-cycle</a></li>
</ol></div>
</section>
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<section><div class="side-section">
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<h2>Related Health Topics</h2>
</div>
<div class="section-body">
<ul class="relatedmp">
<li><a href="https://medlineplus.gov/ectopicpregnancy.html">Ectopic Pregnancy</a></li>
<li><a href="https://medlineplus.gov/femaleinfertility.html">Female Infertility</a></li>
<li><a href="https://medlineplus.gov/healthproblemsinpregnancy.html">Health Problems in Pregnancy</a></li>
<li><a href="https://medlineplus.gov/hormones.html">Hormones</a></li>
<li><a href="https://medlineplus.gov/infertility.html">Infertility</a></li>
<li><a href="https://medlineplus.gov/menstruation.html">Menstruation</a></li>
<li><a href="https://medlineplus.gov/miscarriage.html">Miscarriage</a></li>
<li><a href="https://medlineplus.gov/ovariancancer.html">Ovarian Cancer</a></li>
<li><a href="https://medlineplus.gov/ovariancysts.html">Ovarian Cysts</a></li>
<li><a href="https://medlineplus.gov/pregnancy.html">Pregnancy</a></li>
</ul>
</div>
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<section><div class="side-section">
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<h2>Related Medical Tests</h2>
</div>
<div class="section-body">
<ul class="relatedmp">
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"description": "A progesterone test measures the level of progesterone in a sample of your blood. Progesterone is a hormone that's made mainly by the ovaries, which are two glands in the female reproductive system that contain eggs. Each month, progesterone prepares your uterus for pregnancy. During a normal menstrual cycle, an ovary releases an egg and your progesterone levels begin to rise. Progesterone makes the lining of your uterus grow thicker so that a fertilized egg can attach (implant) inside of the uterus and grow into a baby. If you don't become pregnant, your progesterone levels will fall. The lining of your uterus will become thinner again. When your uterus starts to get rid of the extra blood and tissue, your menstrual period will begin. If you become pregnant, progesterone levels will continue to rise to about 10 times higher than usual to support the pregnancy. High levels of progesterone prevent the uterus from contracting (squeezing) and causing pre-term labor. Much of the progesterone you need for a healthy pregnancy is made by the placenta. The placenta is the organ that grows in the uterus to provide nutrients and oxygen to the unborn baby. A progesterone test can help show whether low progesterone levels are causing female infertility (problems getting pregnant after a year of trying) or problems during pregnancy. The test may also help diagnose certain problems with the adrenal glands that may cause high levels of progesterone in both females and males. Other names: serum progesterone, progesterone blood test, PGSN",
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