Search
Site Search
About CHAM
Who We Are
Our Mission
Our Values
CHAM Leadership
In the Community
News
Community Events
Inside CHAM
CHAM Connections
CHAM Mentions
Bronx Locations
US News & World Report
Health Library
Patient Health Library
Refer a Patient
Find a Doctor
Find a Clinical Trial
SIGN IN TO MYCHART
Ways to Give
Volunteer
Volunteering at CHAM
Why Support Montefiore
Donate
Toggle menu
Specialties & Programs
Pediatric Specialties
View Specialties
Adolescent Medicine (Gynecology, Menstrual disorders, Contraception, Eating disorders, Obesity)
Allergy and Immunology
Anesthesiology
Cardiology (Heart)
Cardiothoracic Surgery (Heart)
Community and Population Health
Craniofacial Surgery
Critical Care Medicine
Dentistry
Dermatology (Skin Disorders)
Developmental Medicine (Developmental and Behavioral Pediatrics, Autism, ADHD, Developmental Delays and Mental Health)
Emergency Medicine
Endocrinology & Diabetes
Fetal Medicine (High Risk OB/GYN)
Gastroenterology, Hepatology, and Nutrition (Inflammatory Bowel Disease, Liver Disease, Liver Transplant
General Pediatrics (Academic General Pediatrics)
Genetics (Inherited Diseases, Rare Diseases, Genetic Counseling)
Heart
Pediatric Hematology, Oncology, and Cellular Therapy
Hepatology (Liver Disease)
Hospital Medicine
Infectious Disease (Vaccines, Complex Infection and Antibiotic Management)
Neonatology (Premature and Sick Newborn Care)
Nephrology (Kidney Disease, Hypertension, Dialysis, Kidney Transplant)
Neurology (Seizures, Neuromuscular and Brain Diseases, Muscular Dystrophy, Rhett Syndrome)
Neurosurgery
Ophthalmology (Eye and Vision)
Orthopedics (Bones and Joints)
Otorhinolaryngology (Ears, Nose, Throat)
Plastic Surgery
Psychiatry (Therapy for Mental Health Problems, Depression, Psychiatric Diseases)
Radiology,X-rays, ultrasound, MRI, CT, interventional procedures
Respiratory and Sleep Medicine (Lung and Breathing Problems, Asthma, Sleep Apnea)
Rheumatology (Lupus, Juvenile Arthritis, Childhood Autoimmune Diseases)
Surgery
Urology (Kidney, Ureter and Bladder)
PROGRAMS & CENTERS
View All Programs & Centers >
For Patients & Families
Getting Here
Your Hospital Visit
Neighborhood Services
Visitors
Community Events
Support Services
Paying For Your Visit
FAQs
Find A Doctor
Get Directions
For Health
Professionals
Refer A Patient
Residency and Fellowship at the Children’s Hospital at Montefiore
Nursing At CHAM
Grand Rounds
Careers
L.E.A.D. Program
Staff & Alumni Association
Quality & Performance Improvement
CHAM Leadership
Medical Student Education
Clinical Pathways
Research
Child Health Research at CHAM
Improving Child Health Across Disciplines
Clinical Trials
Albert Einstein College Of Medicine
Preventive Intervention Research Center for Child Health (PIRC)
IMPLEMENT
Home
Health Library
Health Library
<div class="HwContainer HwElement" id="HwContainer"><a class="HwMainSkipNavigation" href="#HwContentTitle"><span class="HwAccessibilityText">Skip Navigation</span></a><div class="HwBlock" id="HwMain" role="main"><div class="HwRow"><div class="HwColumn" id="HwColumnSidebar1"><div class="HwCustom" id="HwCustomSidebar"> </div></div><div class="HwColumn" id="HwColumnContent"><div id="HwContentTop"> </div><div class="HwTypeMedicalTest HwContentWrapper HwElement" role="article" id="HwContentWrapper"><div class="HwCustom" id="HwCustomContentTop"> </div><div class="HwContentHeader"><p><a name="top" id="Hwtop"><span class="HwAccessibilityText">Top of the page</span></a> </p></div><div class="HwContentTitle"><h1 id="HwContentTitle" tabindex="-1">CD4+ Count Test</h1></div><div class="HwContentTopNavigation"> </div><div class="HwContent"><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6408"><h2 class="HwSectionTitle" fingerprint="d4032d6d" fingerprint-exact="4fcae40e">Test Overview</h2> <p fingerprint="4cb2b2c8" fingerprint-exact="58369bcc">A CD4+ count is a blood test to see how well the <a class="HwLinkDefinition" data-hw-type="Definition" data-hw-document-href="sti150867" data-hw-section="sti150867-sec" rel="Definition" hw:document-type="Definition" hw:document-href="sti150867" data-hwid="sti150867" hw:section-href="sti150867-sec" href="?id=sti150867#sti150867-sec"><span class="HwLinkText">immune system</span></a> is working in people who have been diagnosed with <a class="HwLinkDefinition" data-hw-type="Definition" data-hw-document-href="sth149894" data-hw-section="sth149894-sec" rel="Definition" hw:document-type="Definition" hw:document-href="sth149894" data-hwid="sth149894" hw:section-href="sth149894-sec" href="?id=sth149894#sth149894-sec"><span class="HwLinkText">HIV</span></a>. CD4+ cells are a type of white blood cell. White blood cells are important in fighting infections. CD4+ cells are also called T-lymphocytes, T-cells, or T-helper cells. </p> <p fingerprint="0e397250" fingerprint-exact="c3ba0021">HIV infects CD4+ cells. The number of CD4+ cells helps determine whether other infections (<a class="HwLinkDefinition" data-hw-type="Definition" data-hw-document-href="sto167616" data-hw-section="sto167616-sec" rel="Definition" hw:document-type="Definition" hw:document-href="sto167616" data-hwid="sto167616" hw:section-href="sto167616-sec" href="?id=sto167616#sto167616-sec"><span class="HwLinkText">opportunistic infections</span></a>) may occur. If HIV isn't treated, CD4+ counts generally go down as HIV gets worse. In most cases, a low CD4+ count means you have a weakened immune system and a higher chance of getting opportunistic infections.</p> </div><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6409"><h2 class="HwSectionTitle" fingerprint="3d5095ef" fingerprint-exact="55cd7304">Why It Is Done</h2> <p fingerprint="eeeab0c1" fingerprint-exact="91d9c10e">CD4+ counts are done to: </p> <ul fingerprint="313c4059" fingerprint-exact="0f852715"> <li>Keep track of how the HIV infection is affecting your immune system. </li> <li>Help diagnose <a class="HwLinkDefinition" data-hw-type="Definition" data-hw-document-href="sta123131" data-hw-section="sta123131-sec" rel="Definition" hw:document-type="Definition" hw:document-href="sta123131" data-hwid="sta123131" hw:section-href="sta123131-sec" href="?id=sta123131#sta123131-sec"><span class="HwLinkText">AIDS</span></a>. If you don't get treatment, HIV infection can progress to AIDS.</li> <li>Check to see if you're at risk for other infections (<a class="HwLinkDefinition" data-hw-type="Definition" data-hw-document-href="sto167616" data-hw-section="sto167616-sec" rel="Definition" hw:document-type="Definition" hw:document-href="sto167616" data-hwid="sto167616" hw:section-href="sto167616-sec" href="?id=sto167616#sto167616-sec"><span class="HwLinkText">opportunistic infections</span></a>). </li> <li>Decide whether to start treatment to prevent opportunistic infections, such as medicines to prevent <i>Pneumocystis</i> pneumonia. </li> </ul> <p fingerprint="bda852b6" fingerprint-exact="e7a315bb">How often your CD4+ count is checked depends on your treatment, your health, and your prior CD4+ count results. </p> </div><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6410"><h2 class="HwSectionTitle" fingerprint="026e985e" fingerprint-exact="df1d0bbc">How To Prepare</h2> <p fingerprint="0c7dd686" fingerprint-exact="c04bee41">In general, there's nothing you have to do before this test unless your doctor tells you to.</p> </div><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6411"><h2 class="HwSectionTitle" fingerprint="e59ce77f" fingerprint-exact="42dd83e2">How It Is Done</h2> <p fingerprint="5aae0cd8" fingerprint-exact="a27baf64">A health professional uses a needle to take a blood sample, usually from the arm.</p> <h3 class="HwSubSectionTitle" fingerprint="ffd3beac" fingerprint-exact="500b4a26">Watch</h3> <div class="HwOptionalAll"> <div class="hwMediaLinks"> <ul fingerprint="2a924914" fingerprint-exact="939aff65"> <li class="HwOptionalAny"> <a class="HwLinkMultiMedia" data-hw-type="MultiMedia" data-hw-document-href="acj1944" data-hw-section="acj1944-sec" rel="MultiMedia" hw:document-type="MultiMedia" hw:document-href="acj1944" data-hwid="acj1944" hw:section-href="acj1944-sec" hw:link-type="video" href="?id=acj1944#acj1944-sec"><span class="HwLinkText">Learning About Your Blood Test</span><br><img class="HwMediaImage" data-hw-resource-path="media/thumbnails/acj1944_416x312.jpg" hw:resource-path="media/thumbnails/acj1944_416x312.jpg" src="https://ixbapi.healthwise.net/Resource/14.6/en-us/media/thumbnails/acj1944_416x312.jpg" width="416" height="312" alt hw:release-quarter="14.6"></a> </li> <li class="HwOptionalAny"> <a class="HwLinkMultiMedia" data-hw-type="MultiMedia" data-hw-document-href="aci5157" data-hw-section="aci5157-sec" rel="MultiMedia" hw:document-type="MultiMedia" hw:document-href="aci5157" data-hwid="aci5157" hw:section-href="aci5157-sec" hw:link-type="video" href="?id=aci5157#aci5157-sec"><span class="HwLinkText">Learning About Blood Tests for Children</span><br><img class="HwMediaImage" data-hw-resource-path="media/thumbnails/aci5157_416x312.jpg" hw:resource-path="media/thumbnails/aci5157_416x312.jpg" src="https://ixbapi.healthwise.net/Resource/14.6/en-us/media/thumbnails/aci5157_416x312.jpg" width="416" height="312" alt hw:release-quarter="14.6"></a> </li> </ul> </div> </div> </div><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6412"><h2 class="HwSectionTitle" fingerprint="2dd5db50" fingerprint-exact="deba34d5">How It Feels</h2> <p fingerprint="1ac94c75" fingerprint-exact="5d3995d8">When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch.</p> </div><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6413"><h2 class="HwSectionTitle" fingerprint="a566bce5" fingerprint-exact="1aacb8d8">Risks</h2> <p fingerprint="f81952f3" fingerprint-exact="73b0e5b4">There is very little chance of having a problem from this test. When a blood sample is taken, a small bruise may form at the site.</p> </div><div class="HwNavigationSection HwSectionSpecialSection" id="sec-tu6414"><h2 class="HwSectionTitle" fingerprint="9413e669" fingerprint-exact="9fa3e414">Results</h2> <p fingerprint="9b2cdf5c" fingerprint-exact="e4a7b52a">In people who have HIV, the CD4+ count almost always goes up with treatment. Low CD4+ counts make infections more likely.</p> </div><div class="HwNavigationSection HwSectionRelatedInformation" id="sec-tu6407-RelInfo"><h2 class="HwSectionTitle" fingerprint="d5f858e0" fingerprint-exact="c0ffe04b">Related Information</h2><ul fingerprint="84fa2609" fingerprint-exact="f35dd6f7"><li class="HwOptionalAny"><a data-hw-type="Focus" data-hw-document-href="zm2257" data-hw-section="zm2257_sec" hw:document-type="Focus" hw:document-href="zm2257" data-hwid="zm2257" hw:section-href="zm2257_sec" href="?id=zm2257#zm2257_sec">Medical Tests: Questions to Ask the Doctor</a></li></ul></div><div class="HwNavigationSection HwCreditsSection HwSectionCredits" id="sec-tu6407-Credits"><h2 class="HwSectionTitle">Credits</h2><div class="HwContentInformation"><div class="HwLastUpdated"><p><span class="HwInfoLabel">Current as of: </span> September 10, 2024</p></div><div class="HwCredits"><p><span class="HwInfoLabel">Author: </span><a class="HwLinkExternal" href="https://www.healthwise.org/specialpages/legal/abouthw/en" title="Opens in a new window"><span class="HwLinkText">Ignite Healthwise, LLC Staff</span></a><br><span><b><a class="HwLinkExternal" href="https://www.healthwise.org/specialpages/legal/abouthw/en" title="Opens in a new window"><span class="HwLinkText">Clinical Review Board</span></a></b></span><br>All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.</p></div></div></div></div><div class="HwCustom" id="HwCustomContentBottom"> </div><div class="HwContentNavigation"><div class="HwSectionNavItem" style="display:block" id="secNav-tu6408"><div class="HwContentNavigationNone"> </div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6409" id="nextLink-tu6409" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6409" href="?id=tu6407#tu6409">Why It Is Done</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6409"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6408" id="prevLink-tu6408" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6408" href="?id=tu6407#tu6408">Test Overview</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6410" id="nextLink-tu6410" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6410" href="?id=tu6407#tu6410">How To Prepare</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6410"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6409" id="prevLink-tu6409" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6409" href="?id=tu6407#tu6409">Why It Is Done</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6411" id="nextLink-tu6411" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6411" href="?id=tu6407#tu6411">How It Is Done</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6411"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6410" id="prevLink-tu6410" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6410" href="?id=tu6407#tu6410">How To Prepare</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6412" id="nextLink-tu6412" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6412" href="?id=tu6407#tu6412">How It Feels</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6412"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6411" id="prevLink-tu6411" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6411" href="?id=tu6407#tu6411">How It Is Done</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6413" id="nextLink-tu6413" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6413" href="?id=tu6407#tu6413">Risks</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6413"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6412" id="prevLink-tu6412" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6412" href="?id=tu6407#tu6412">How It Feels</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6414" id="nextLink-tu6414" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6414" href="?id=tu6407#tu6414">Results</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6414"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6413" id="prevLink-tu6413" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6413" href="?id=tu6407#tu6413">Risks</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6407-RelInfo" id="nextLink-tu6407-RelInfo" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6407-RelInfo" href="?id=tu6407#tu6407-RelInfo">Related Information</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6407-RelInfo"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6414" id="prevLink-tu6414" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6414" href="?id=tu6407#tu6414">Results</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNext"><p>Next Section: </p><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6407-Credits" id="nextLink-tu6407-Credits" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6407-Credits" href="?id=tu6407#tu6407-Credits">Credits</a><span class="HwNavLinkArrow" aria-hidden="true"> »</span></div><div class="HwClear"> </div></div><div class="HwSectionNavItem" style="display:none" id="secNav-tu6407-Credits"><div class="HwContentNavigationPrev"><p>Previous Section: </p><span class="HwNavLinkArrow" aria-hidden="true">« </span><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6407-RelInfo" id="prevLink-tu6407-RelInfo" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6407-RelInfo" href="?id=tu6407#tu6407-RelInfo">Related Information</a></div><div class="HwContentNavigationTop"><a href="#top">Top of the page</a></div><div class="HwContentNavigationNone"> </div><div class="HwClear"> </div></div></div><div class="HwContentInformation"><div class="HwLastUpdated"><p><span class="HwInfoLabel">Current as of: </span>September 10, 2024</p></div><div class="HwCredits"><p><span class="HwInfoLabel">Author: </span><a class="HwLinkDisclaimer" href="https://www.healthwise.org/specialpages/legal/abouthw/en">Ignite Healthwise, LLC Staff</a></p><p><a class="HwLinkDisclaimer" href="https://www.healthwise.org/specialpages/legal/abouthw/en"><span><b>Clinical Review Board</b></span></a><br>All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.</p></div></div></div></div><div class="HwColumn" id="HwColumnSidebar2"><div class="HwCustom" id="HwCustomNavigationTop"> </div><div class="HwElement" id="HwNavigationWrapper"><div class="HwNavigation" id="HwNavigation" role="navigation"><h3 class="HwNavStackHeader" id="HwNavStackHeader">Topic Contents</h3><ul aria-labelledby="HwNavStackHeader"><li id="nav-tu6408"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6408" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6408" href="?id=tu6407#tu6408">Test Overview</a></li><li id="nav-tu6409"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6409" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6409" href="?id=tu6407#tu6409">Why It Is Done</a></li><li id="nav-tu6410"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6410" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6410" href="?id=tu6407#tu6410">How To Prepare</a></li><li id="nav-tu6411"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6411" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6411" href="?id=tu6407#tu6411">How It Is Done</a></li><li id="nav-tu6412"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6412" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6412" href="?id=tu6407#tu6412">How It Feels</a></li><li id="nav-tu6413"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6413" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6413" href="?id=tu6407#tu6413">Risks</a></li><li id="nav-tu6414"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6414" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6414" href="?id=tu6407#tu6414">Results</a></li><li id="nav-tu6407-RelInfo"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6407-RelInfo" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6407-RelInfo" href="?id=tu6407#tu6407-RelInfo">Related Information</a></li><li id="nav-tu6407-Credits"><a class="HwLinkNavstack" data-hw-type="MedicalTest" data-hw-document-href="tu6407" data-hw-section="tu6407-Credits" hw:document-type="MedicalTest" hw:document-href="tu6407" data-hwid="tu6407" hw:section-href="tu6407-Credits" href="?id=tu6407#tu6407-Credits">Credits</a></li></ul></div></div><div class="HwNavigationWrapper HwNavigationEmpty"> </div><div class="HwCustom" id="HwCustomNavigationBottom"> </div></div></div></div><div class="HwBlock" id="HwFooter"><div class="HwRow"><div class="HwCustom HwColumn" id="HwCustomFooterLeft"> </div><div class="HwColumn" id="HwFooterLegal"><div class="HwLegal HwElement" role="contentinfo"><div class="HwLogo"><a class="HwLinkExternal" href="https://www.healthwise.org/specialpages/legal/abouthw/en"><img class="HwNoHcMode" data-hw-resource-path="media/interface/hwlogo.png" alt="Click here to learn about Ignite Healthwise, LLC" src="https://ixbapi.healthwise.net/Resource/14.6/en-us/media/interface/hwlogo.png" hw:resource-path="media/interface/hwlogo.png" hw:release-quarter="14.6"><img class="HwHcMode" data-hw-resource-path="media/interface/hwlogo_hc.png" alt="Click here to learn about Ignite Healthwise, LLC" src="https://ixbapi.healthwise.net/Resource/14.6/en-us/media/interface/hwlogo_hc.png" hw:resource-path="media/interface/hwlogo_hc.png" hw:release-quarter="14.6"></a></div><div class="HwDisclaimer"><p>This information does not replace the advice of a doctor. Ignite Healthwise, LLC disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the <a href="https://www.healthwise.org/specialpages/legal/terms.aspx">Terms of Use</a> and <a href="https://www.healthwise.org/specialpages/legal/privacy.aspx">Privacy Policy</a>. Learn <a class="HwLinkExternal" href="https://www.healthwise.org/specialpages/legal/abouthw/en">how we develop our content</a>.</p></div><div class="HwOptionalLogo"><div class="HwLogo"><a class="HwLinkExternal" href="https://www.healthwise.org/specialpages/legal/abouthw/en"><img class="HwNoHcMode" data-hw-resource-path="media/interface/hwlogo.png" alt="Click here to learn about Ignite Healthwise, LLC" src="https://ixbapi.healthwise.net/Resource/14.6/en-us/media/interface/hwlogo.png" hw:resource-path="media/interface/hwlogo.png" hw:release-quarter="14.6"><img class="HwHcMode" data-hw-resource-path="media/interface/hwlogo_hc.png" alt="Click here to learn about Ignite Healthwise, LLC" src="https://ixbapi.healthwise.net/Resource/14.6/en-us/media/interface/hwlogo_hc.png" hw:resource-path="media/interface/hwlogo_hc.png" hw:release-quarter="14.6"></a></div></div><div class="HwCopyright"><p class="HwCopyrightLink">To learn more about Ignite Healthwise, LLC, visit <a href="https://www.webmdignite.com/">webmdignite.com</a>. </p><p>© 2024-2025 Ignite Healthwise, LLC. </p></div></div></div><div class="HwCustom HwColumn" id="HwCustomFooterRight"> </div></div></div><div class="HwCustom HwBlock" id="HwCustomFooter"> </div></div>