Knowledge Article · NLM Customer Support Center

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Ask how the tests are performed, what the results mean, and what the normal ranges are for the tests. Some test kits have test kit company contact information for questions.</span></span></p> </li> <li> <p><span style="font-family:Arial,Helvetica,sans-serif;"><span style="font-size:16px;">Look at the MedlinePlus health topic page for <a href="https://www.medlineplus.gov/laboratorytests.html" id=anch_184>laboratory tests</a>, go to the <a href="https://www.medlineplus.gov/diagnostictests.html" id=anch_185>Diagnostic Tests</a> section to select a specific type of test, or find medical test information in the <a href="https://www.medlineplus.gov/encyclopedia.html" id=anch_186>A.D.A.M. Medical Encyclopedia</a>.</span></span></p> </li> <li> <p><span style="font-family:Arial,Helvetica,sans-serif;"><span style="font-size:16px;">Search <a href="https://www.ncbi.nlm.nih.gov/pubmed/" id=anch_187>MEDLINE/PubMed</a>, the NLM database for biomedical literature, for journal articles about testing for various diseases or conditions.</span></span></p> </li> <li> <p><span style="font-family:Arial,Helvetica,sans-serif;"><span style="font-size:16px;">Go to <a href="https://labtestsonline.org/">Testing.com, formerly Lab Tests Online</a>, developed by the American Association for Clinical Chemistry.</span></span></p> </li> <li> <p><span style="font-family:Arial,Helvetica,sans-serif;"><span style="font-size:16px;">Contact one of these US Food & Drug Administration (FDA) Centers: <a href="https://www.fda.gov/AboutFDA/CentersOffices/OfficeofMedicalProductsandTobacco/CBER/default.htm" id=anch_190>Center for Biologics Evaluation and Research (CBER)</a> OR<br> <a href="https://www.fda.gov/AboutFDA/CentersOffices/OfficeofMedicalProductsandTobacco/CDRH/default.htm" id=anch_191>Center for Devices and Radiological Health (CDRH)</a></span></span></p> </li> </ul> <p><span style="font-family:Arial,Helvetica,sans-serif;"><span style="font-size:16px;"><strong>NLM is not responsible for the availability or content of external sites. 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