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<span>Prenatal Testing</span>
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Prenatal Testing
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<div id="topic-summary" class="syndicate"><p>Prenatal testing provides information about your <a href="https://medlineplus.gov/fetalhealthanddevelopment.html">baby's health</a> before he or she is born. Some routine tests during <a href="https://medlineplus.gov/pregnancy.html">pregnancy</a> also check on your health. At your first <a href="https://medlineplus.gov/prenatalcare.html">prenatal visit</a>, your health care provider will test for a number of things, including problems with your blood, signs of <a href="https://medlineplus.gov/infectionsandpregnancy.html">infections</a>, and whether you are immune to <a href="https://medlineplus.gov/rubella.html">rubella</a> (German measles) and <a href="https://medlineplus.gov/chickenpox.html">chickenpox</a>.</p>
<p>Throughout your pregnancy, your health care provider may suggest a number of other tests, too. Some tests are suggested for all women, such as screenings for <a href="https://medlineplus.gov/diabetesandpregnancy.html">gestational diabetes</a>, <a href="https://medlineplus.gov/downsyndrome.html">Down syndrome</a>, and <a href="https://medlineplus.gov/hivandpregnancy.html">HIV</a>. Other tests might be offered based on your:</p><ul>
<li>Age</li>
<li>Personal or family medical history</li>
<li>Ethnic background</li>
<li>Results of routine tests</li>
</ul>
<p>There are two types of tests:</p><ul>
<li><strong>Screening tests</strong> are tests that are done to see if you or your baby might have certain problems. They evaluate risk, but do not diagnose problems. If your screening test result is abnormal, it does not mean that there is a problem. It means that more information is needed. Your health care provider can explain what the test results mean and possible next steps. You may need diagnostic testing.</li>
<li><strong>Diagnostic tests</strong> show whether or not you or your baby have a certain problem.</li>
</ul>
<p>It is your choice whether or not to get the prenatal tests. You and your health care provider can discuss the risks and benefits of the tests, and what kind of information the tests can give you. Then you can decide which ones are right for you.</p>
<p class="attribution">Dept. of Health and Human Services Office on Women's Health</p></div>
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<a href="https://www.acog.org/womens-health/faqs/prenatal-genetic-screening-tests" target="TheNewWin" data-sid="125590" >Prenatal Genetic Screening Tests</a>
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<span class="orgs"> (American College of Obstetricians and Gynecologists)</span>
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<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/pruebas-prenatales/" data-sid="156269">Spanish</a> </span>
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<span class="orgs"> (Nemours Foundation)</span>
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<span class="also-lang"> Also in <a target="TheNewWin2" href="https://kidshealth.org/es/parents/prenatal-tests.html" data-sid="94286">Spanish</a> </span>
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<a href="https://www.nichd.nih.gov/health/topics/preconceptioncare/conditioninfo/tests-needed" target="TheNewWin" data-sid="108210" data-org="NICHD">What Tests Might I Need during Pregnancy?</a>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
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<span class="also-lang"> Also in <a target="TheNewWin2" href="https://espanol.nichd.nih.gov/salud/temas/preconceptioncare/informacion/necesitar" data-sid="117592">Spanish</a> </span>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
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<span class="orgs"> (American College of Obstetricians and Gynecologists)</span>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
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<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-de-sindrome-de-down/" data-sid="133257">Spanish</a> </span>
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<a href="https://medlineplus.gov/lab-tests/glucose-in-urine-test/" data-sid="129613" data-org="NLM">Glucose in Urine Test</a>
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<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-de-glucosa-en-la-orina/" data-sid="129676">Spanish</a> </span>
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<li>
<a href="https://medlineplus.gov/lab-tests/karyotype-genetic-test/" data-sid="133197" data-org="NLM">Karyotype Genetic Test</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-de-cariotipo/" data-sid="133250">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/lab-tests/nonstress-test/" data-sid="152010" data-org="NLM">Nonstress Test</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-sin-estres/" data-sid="152029">Spanish</a> </span>
</li>
<li>
<a href="https://www.radiologyinfo.org/en/info/obstetricus" target="TheNewWin" data-sid="11016" >Obstetric Ultrasound</a>
<span class="desc-text">
<span class="orgs"> (American College of Radiology; Radiological Society of North America)</span>
</span>
<span class="also-lang"> Also in <a target="TheNewWin2" href="https://www.radiologyinfo.org/es/info/obstetricus" data-sid="58375">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/lab-tests/prenatal-cell-free-dna-screening/" data-sid="141972" data-org="NLM">Prenatal Cell-Free DNA Screening</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-de-adn-fetal-libre/" data-sid="141994">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/lab-tests/red-blood-cell-antibody-screen/" data-sid="131166" data-org="NLM">Red Blood Cell Antibody Screen</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-de-anticuerpos-contra-los-globulos-rojos/" data-sid="131190">Spanish</a> </span>
</li>
<li>
<a href="https://www.mayoclinic.org/tests-procedures/rh-factor/about/pac-20394960?p=1" target="TheNewWin" data-sid="99816" >Rh Factor Blood Test</a>
<span class="desc-text">
<span class="orgs"> (Mayo Foundation for Medical Education and Research)</span>
</span>
<span class="also-lang"> Also in <a target="TheNewWin2" href="https://www.mayoclinic.org/es/tests-procedures/rh-factor/about/pac-20394960?p=1" data-sid="131546">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/lab-tests/strep-b-test/" data-sid="142446" data-org="NLM">Strep B Test</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Library of Medicine)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/pruebas-de-laboratorio/prueba-de-estreptococos-del-grupo-b/" data-sid="142455">Spanish</a> </span>
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</section>
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<h2>Images
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<a href="https://medlineplus.gov/ency/presentations/100192_1.htm" data-sid="97851" >Amniocentesis - series</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/esp_presentations/100192_1.htm" data-sid="97990">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/presentations/100194_1.htm" data-sid="98032" >Chorionic villus sampling - series -- Normal anatomy</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/esp_presentations/100194_1.htm" data-sid="97991">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/presentations/100196_1.htm" data-sid="98085" >Percutaneous umbilical cord blood sampling - series</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/esp_presentations/100196_1.htm" data-sid="97992">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/presentations/100197_1.htm" data-sid="98033" >Prenatal ultrasound - series</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/esp_presentations/100197_1.htm" data-sid="98027">Spanish</a> </span>
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<h2>Clinical Trials
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<a href="https://clinicaltrials.gov/search?intr=amniocentesis&amp;aggFilters=status:not%20rec" target="TheNewWin" data-sid="162207" data-org="NIH">ClinicalTrials.gov: Amniocentesis</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Institutes of Health)</span>
</span>
</li>
<li>
<a href="https://clinicaltrials.gov/search?intr=chorionic+villi+sampling&amp;aggFilters=status:not%20rec" target="TheNewWin" data-sid="40775" data-org="NIH">ClinicalTrials.gov: Chorionic Villi Sampling</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Institutes of Health)</span>
</span>
</li>
<li>
<a href="https://clinicaltrials.gov/search?intr=ultrasound&amp;term=prenatal&amp;aggFilters=status:not%20rec" target="TheNewWin" data-sid="37356" data-org="NIH">ClinicalTrials.gov: Prenatal Ultrasound</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
<span class="orgs"> (National Institutes of Health)</span>
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<h2>Journal Articles
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<li>
<a href="https://www.ncbi.nlm.nih.gov/pubmed/39789516" target="TheNewWin" data-sid="1222" >Article: "Knowledge was clearly associated with education." epistemic positioning in the context...</a>
<span class="desc-text">
</span>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/pubmed/39713885" target="TheNewWin" data-sid="1222" >Article: Antenatal Diagnosis and Treatment in Congenital Adrenal Hyperplasia Due to 21-hydroxylase...</a>
<span class="desc-text">
</span>
</li>
<li>
<a href="https://www.ncbi.nlm.nih.gov/pubmed/39696561" target="TheNewWin" data-sid="1222" >Article: Prenatal diagnosis and molecular cytogenetic analysis of pure chromosome 10p15.3 microdeletion...</a>
<span class="desc-text">
</span>
</li>
<li>
<a href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Prenatal+Diagnosis%22%5Bmajr%3Anoexp%5D+AND+humans%5Bmh%5D+AND+english%5Bla%5D+AND+%22last+1+Year%22+%5Bedat%5D+NOT+%28letter%5Bpt%5D+OR+case+reports%5Bpt%5D+OR+editorial%5Bpt%5D+OR+comment%5Bpt%5D%29+AND+free+full+text%5Bsb%5D+" target="TheNewWin" data-sid="1222" >Prenatal Testing -- see more articles</a>
<span class="desc-text">
</span>
</li>
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<h2>Find an Expert
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<div id="section83" class="section-body">
<ul class="bulletlist">
<li>
<a href="https://www.nichd.nih.gov/" target="TheNewWin" data-sid="267" data-org="NICHD">Eunice Kennedy Shriver National Institute of Child Health and Human Development</a>
<span class="desc-text">
<img width="25" height="16" alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc">
</span>
<span class="also-lang"> Also in <a target="TheNewWin2" href="https://espanol.nichd.nih.gov/" data-sid="119162">Spanish</a> </span>
</li>
<li>
<a href="https://www.marchofdimes.org/" target="TheNewWin" data-sid="102" >March of Dimes Foundation</a>
<span class="desc-text">
</span>
<span class="also-lang"> Also in <a target="TheNewWin2" href="https://nacersano.marchofdimes.org/" data-sid="35571">Spanish</a> </span>
</li>
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<div class="section-title">
<h2>Patient Handouts
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<li>
<a href="https://medlineplus.gov/ency/article/003573.htm" data-sid="83100" >Alpha fetoprotein</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/article/003573.htm" data-sid="86129">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/article/003921.htm" data-sid="83616" >Amniocentesis</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/article/003921.htm" data-sid="85655">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/article/003406.htm" data-sid="83290" >Chorionic villus sampling</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/article/003406.htm" data-sid="86849">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/patientinstructions/000485.htm" data-sid="103856" >Monitoring your baby before labor</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/patientinstructions/000485.htm" data-sid="103831">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/article/007561.htm" data-sid="106218" >Nuchal translucency test</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/article/007561.htm" data-sid="106295">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/article/007311.htm" data-sid="83817" >Quadruple screen test</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/article/007311.htm" data-sid="85832">Spanish</a> </span>
</li>
<li>
<a href="https://medlineplus.gov/ency/article/003778.htm" data-sid="83373" >Ultrasound pregnancy</a>
<span class="desc-text">
<span class="orgs"> (Medical Encyclopedia)</span>
</span>
<span class="also-lang"> Also in <a href="https://medlineplus.gov/spanish/ency/article/003778.htm" data-sid="85185">Spanish</a> </span>
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<h2>Topic Image</h2>
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<img src="https://medlineplus.gov/images/PrenatalTesting.jpg" title="Prenatal Testing" alt="Prenatal Testing" />
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<h2>MEDICAL ENCYCLOPEDIA</h2>
</div>
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<ul>
<li><a data-sid="83100" href="https://medlineplus.gov/ency/article/003573.htm">Alpha fetoprotein</a></li>
<li><a data-sid="83616" href="https://medlineplus.gov/ency/article/003921.htm">Amniocentesis</a></li>
<li><a data-sid="97851" href="https://medlineplus.gov/ency/presentations/100192_1.htm">Amniocentesis - series</a></li>
<li><a data-sid="83290" href="https://medlineplus.gov/ency/article/003406.htm">Chorionic villus sampling</a></li>
<li><a data-sid="98032" href="https://medlineplus.gov/ency/presentations/100194_1.htm">Chorionic villus sampling - series -- Normal anatomy</a></li>
<li><a data-sid="83842" href="https://medlineplus.gov/ency/article/007340.htm">Fetal echocardiography</a></li>
<li><a data-sid="83291" href="https://medlineplus.gov/ency/article/003407.htm">Fetal-maternal erythrocyte distribution blood test</a></li>
<li><a data-sid="103856" href="https://medlineplus.gov/ency/patientinstructions/000485.htm">Monitoring your baby before labor</a></li>
<li><a data-sid="106218" href="https://medlineplus.gov/ency/article/007561.htm">Nuchal translucency test</a></li>
<li><a data-sid="98085" href="https://medlineplus.gov/ency/presentations/100196_1.htm">Percutaneous umbilical cord blood sampling - series</a></li>
</ul><ul class="more-links">
<li><a data-sid="98033" href="https://medlineplus.gov/ency/presentations/100197_1.htm">Prenatal ultrasound - series</a></li>
<li><a data-sid="83817" href="https://medlineplus.gov/ency/article/007311.htm">Quadruple screen test</a></li>
<li><a data-sid="83373" href="https://medlineplus.gov/ency/article/003778.htm">Ultrasound pregnancy</a></li>
</ul>
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<h2>Related Health Topics</h2>
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<li><a href="https://medlineplus.gov/fetalhealthanddevelopment.html">Fetal Health and Development</a></li>
<li><a href="https://medlineplus.gov/genetictesting.html">Genetic Testing</a></li>
<li><a href="https://medlineplus.gov/prenatalcare.html">Prenatal Care</a></li>
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<h2>National Institutes of Health</h2>
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The primary NIH organization for research on
<span class="italic">Prenatal Testing</span> is the
<a href="https://www.nichd.nih.gov/Pages/index.aspx" target="TheNewWin">Eunice Kennedy Shriver National Institute of Child Health and Human Development</a>
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<span id="lastupdate">Last updated May 4, 2023</span>
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