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<span>Globulin Test</span>
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<span class="page-url print-only">URL of this page: https://medlineplus.gov/lab-tests/globulin-test/</span>
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<h1>Globulin Test</h1>
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<section><div class="mp-content"><h2>What is a globulin test?</h2>
<p>Globulins are a group of proteins in your blood. Some globulins are made by your liver. Others are made by your <a data-tid="295" href="https://medlineplus.gov/immunesystemanddisorders.html">immune system</a>. Globulins play an important role in liver and kidney function, blood clotting, and fighting infection. There are different types of globulins called alpha, beta, and gamma globulins. Tests to measure globulins include:</p>
<ul>
<li><strong><a data-pid="33201" href="https://medlineplus.gov/lab-tests/total-protein-and-albumin-globulin-a-g-ratio/">Total protein test</a>.</strong> This blood test measures the total amount of protein in your blood. The two main types of blood proteins are globulins and <a data-pid="664" href="https://medlineplus.gov/lab-tests/albumin-blood-test/">albumin</a>. Albumin makes up most of the protein in the blood, while the rest are called globulin. If your total protein levels are low, it can mean that you have <a data-tid="310" href="https://medlineplus.gov/liverdiseases.html">liver</a> or <a data-tid="91" href="https://medlineplus.gov/kidneydiseases.html">kidney disease</a>.</li>
<li><strong><a data-pid="11701" href="https://medlineplus.gov/lab-tests/protein-electrophoresis-by-immunofixation-blood-test/">Serum protein electrophoresis</a>.</strong> This blood test measures the level of each type of protein in your blood, including the different types of globulins. The levels of specific globulins provide information about how well your immune system is working. So, this test can be used to diagnose disorders of the immune system, a type of cancer called <a data-tid="332" href="https://medlineplus.gov/multiplemyeloma.html">multiple myeloma</a>, and a variety of other conditions.</li>
</ul>
<p>Other names for globulin tests: Serum globulin electrophoresis, total protein</p></div>
</section>
<section><div class="mp-content"><h2>What is it used for?</h2>
<p>Globulin tests can be used to help diagnose various conditions, including:</p>
<ul>
<li>Liver damage or disease</li>
<li>Kidney disease</li>
<li>Nutritional problems, such as <a data-tid="5461" href="https://medlineplus.gov/malnutrition.html">malnutrition</a></li>
<li>Certain <a data-tid="154" href="https://medlineplus.gov/autoimmunediseases.html">autoimmune disorders</a>, conditions in which your immune system attacks the healthy cells of your own tissues and organs by mistake</li>
<li>Certain types of cancer</li>
</ul></div>
</section>
<section><div class="mp-content"><h2>Why do I need a globulin test?</h2>
<p>Your health care provider may order globulin tests:</p>
<ul>
<li>As part of your <a data-tid="4751" href="https://medlineplus.gov/healthcheckup.html">routine checkup</a></li>
<li>To help diagnose specific conditions when you have symptoms</li>
<li>To monitor liver or kidney problems</li>
</ul>
<p><strong>A total protein test</strong> may be included in a <a data-pid="6629" href="https://medlineplus.gov/lab-tests/comprehensive-metabolic-panel-cmp/">comprehensive metabolic panel</a> (CMP), which is often part of a routine checkup. A CMP measures proteins and other substances in your blood. Your provider may order the test if you have symptoms of kidney or liver disease.</p>
<p>If your provider thinks you may have a liver disease, you may also have other tests that check how well your liver is working (<a data-pid="6661" href="https://medlineplus.gov/lab-tests/liver-function-tests/">liver function tests</a>).</p>
<p>Your provider may order them if you are at risk for liver disease or have symptoms of liver disease, which may include:</p>
<ul>
<li><a data-tid="489" href="https://medlineplus.gov/nauseaandvomiting.html">Nausea and vomiting</a></li>
<li>Lack of appetite</li>
<li><a data-tid="5324" href="https://medlineplus.gov/fatigue.html">Fatigue</a></li>
<li>Weakness</li>
<li><a data-tid="4452" href="https://medlineplus.gov/jaundice.html">Jaundice</a>, a condition that causes your skin and eyes to turn yellow</li>
<li><a data-tid="1229" href="https://medlineplus.gov/edema.html">Swelling</a> and/or pain in your abdomen (belly)</li>
<li>Swelling in your ankles and legs</li>
<li>Dark-colored urine (pee) and/or light-colored stool (poop)</li>
<li>Frequent <a data-tid="3067" href="https://medlineplus.gov/itching.html">itching</a></li>
</ul>
<p><strong>A serum protein electrophoresis test</strong> measures the levels of the different types of globulins and other proteins in your blood. Your provider may order this test to diagnose disorders related to your immune system, including:</p>
<ul>
<li><a data-tid="24" href="https://medlineplus.gov/allergy.html">Allergies</a></li>
<li>Autoimmune diseases such as <a data-tid="82" href="https://medlineplus.gov/lupus.html">lupus</a> and <a data-tid="1232" href="https://medlineplus.gov/rheumatoidarthritis.html">rheumatoid arthritis</a></li>
<li>Multiple myeloma, a type of cancer</li>
</ul></div>
</section>
<section><div class="mp-content"><h2>What happens during a globulin test?</h2>
<p>Globulin tests are blood tests. During a blood test, 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 may need to stop taking certain medicines before this test, so tell your provider about everything you take. But don't stop taking any medicines unless your provider tells you to.</p>
<p>If your globulin test is part of another blood test, you may need to <a data-pid="858" href="https://medlineplus.gov/lab-tests/fasting-for-a-blood-test/">fast</a> (not eat or drink) for several hours before the test. Your provider will let you know if there are any special instructions to follow.</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 experience 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><strong>Low globulin levels</strong> may be a sign of:</p>
<ul>
<li>Liver disease</li>
<li>Kidney disease</li>
<li>Malnutrition</li>
</ul>
<p><strong>High globulin levels</strong> may be a sign of:</p>
<ul>
<li>Infection</li>
<li>Inflammatory disease</li>
<li>An immune disorder</li>
<li>Certain cancers, such as multiple myeloma, <a data-tid="1262" href="https://medlineplus.gov/hodgkinlymphoma.html">Hodgkin lymphoma</a> (also called Hodgkin disease), or malignant lymphoma</li>
<li><a data-tid="41" href="https://medlineplus.gov/tuberculosis.html">Tuberculosis</a></li>
</ul>
<p>Certain medicines, <a data-tid="6051" href="https://medlineplus.gov/dehydration.html">dehydration</a>, pregnancy, or other conditions may also cause abnormal results. Talk with your provider to learn what your results mean.</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-refs mp-content"><h2>References</h2>
<ol>
<li>American Cancer Society [Internet]. Atlanta: American Cancer Society Inc.; c2024. What is multiple myeloma?; [updated 2018 Feb 28; cited 2024 Jul 29]; [about 2 screens]. Available from: <a href="https://www.cancer.org/cancer/multiple-myeloma/about/what-is-multiple-myeloma.html" target="bibliowin">https://www.cancer.org/cancer/multiple-myeloma/about/what-is-multiple-myeloma.html</a></li>
<li>American Liver Foundation. [Internet]. New York: American Liver Foundation; c2024. Diagnosing Liver Disease - Liver Biopsy and Liver Function Tests; [updated 2024 Jan 12; cited 2024 Jul 29]; [about 6 screens]. Available from: <a href="https://liverfoundation.org/for-patients/about-the-liver/diagnosing-liver-disease/" target="bibliowin">https://liverfoundation.org/for-patients/about-the-liver/diagnosing-liver-disease/</a></li>
<li>Cleveland Clinic: Health Library: Diagnostics &amp; Testing [Internet]. Cleveland (OH): Cleveland Clinic; c2024. Blood Tests; [reviewed 2022 Dec 06; cited 2024 Jul 29]; [about 16 screens]. Available from: <a href="https://my.clevelandclinic.org/health/diagnostics/24508-blood-tests" target="bibliowin">https://my.clevelandclinic.org/health/diagnostics/24508-blood-tests</a></li>
<li>Cleveland Clinic: Health Library: Diagnostics &amp; Testing [Internet]. Cleveland (OH): Cleveland Clinic; c2024.Comprehensive Metabolic Panel (CMP); [reviewed 2024 Jul 03; cited 2024 Jul 30]; [about 12 screens]. Available from: <a href="https://my.clevelandclinic.org/health/diagnostics/22058-comprehensive-metabolic-panel-cmp" target="bibliowin">https://my.clevelandclinic.org/health/diagnostics/22058-comprehensive-metabolic-panel-cmp</a></li>
<li>Cleveland Clinic: Health Library: Diagnostics &amp; Testing [Internet]. Cleveland (OH): Cleveland Clinic; c2024. Globulin Blood Test; [reviewed 2022 Feb 07; cited 2024 Jul 29]; [about 8 screens]. Available from: <a href="https://my.clevelandclinic.org/health/diagnostics/22365-globulin-blood-test" target="bibliowin">https://my.clevelandclinic.org/health/diagnostics/22365-globulin-blood-test</a></li>
<li>Clinical Info HIV.gov [Internet]. U.S. Department of Health and Human Services; Glossary: Gamma Globulin; [cited 2024 Jul 29]; [about 1 screen]. Available from: <a href="https://clinicalinfo.hiv.gov/en/glossary/gamma-globulin" target="bibliowin">https://clinicalinfo.hiv.gov/en/glossary/gamma-globulin</a></li>
<li>Immune Deficiency Foundation [Internet]. Towson (MD): Immune Deficiency Foundation; c2024. Selective IgA Deficiency [cited 2024 Jul 29]; [about 6 screens]. Available from: <a href="http://primaryimmune.org/about-primary-immunodeficiencies/specific-disease-types/selective-iga-deficiency/" target="bibliowin">http://primaryimmune.org/about-primary-immunodeficiencies/specific-disease-types/selective-iga-deficiency/</a></li>
<li>Nemours KidsHealth [Internet]. Jacksonville (FL): The Nemours Foundation; c1995-2024. Getting a Blood Test; [reviewed 2021 Sep; cited 2024 Jul 29]; [about 4 screens].Available from: <a href="https://kidshealth.org/en/parents/blood-tests.html" target="bibliowin">https://kidshealth.org/en/parents/blood-tests.html</a></li>
<li>O'Connell T, Horita T, Kasravi B. Understanding and Interpreting Serum Protein Electrophoresis. American Family Physician [Internet]. 2005 Jan 1 [cited 2024 Jul 29]; 71(1): 105-112. Available from: <a href="http://www.aafp.org/afp/2005/0101/p105.html" target="bibliowin">http://www.aafp.org/afp/2005/0101/p105.html</a></li>
<li>Testing.com [Internet]. Seattle (WA): OneCare Media; c2024.Protein Electrophoresis, Immunofixation Electrophoresis; [updated 2021 Nov 09; cited 2024 Jul 30]; [about 14 screens]. Available from: <a href="https://www.testing.com/tests/protein-electrophoresis-immunofixation-electrophoresis/" target="bibliowin">https://www.testing.com/tests/protein-electrophoresis-immunofixation-electrophoresis/</a></li>
<li>Testing.com [Internet]. Seattle (WA): OneCare Media; c2024. Total Protein and Albumin/Globulin (A/G) Ratio Test; [updated 2022 Nov 24; cited 2024 Jul 29]; [about 8 screens]. Available from: <a href="https://www.testing.com/tests/total-protein-albumin-globulin-ag-ratio/" target="bibliowin">https://www.testing.com/tests/total-protein-albumin-globulin-ag-ratio/</a></li>
<li>The Johns Hopkins Lupus Center [Internet]. Johns Hopkins Medicine; c2024. Blood Chemistry Panel [cited 2024 Jul 29]; [about 10 screens]. Available from: <a href="https://www.hopkinslupus.org/lupus-tests/screening-laboratory-tests/blood-chemistry-panel/" target="bibliowin">https://www.hopkinslupus.org/lupus-tests/screening-laboratory-tests/blood-chemistry-panel/</a></li>
<li>Tuazon, SA. Serum Protein Electrophoresis. [updated 2023 May 24; cited 2024 Jul 30]. In Medscape: Drugs &amp; Diseases: Laboratory Medicine [Internet]. Atlanta (GA): WebMD LLC; c1994-2024. Available from: <a href="https://emedicine.medscape.com/article/2087113-overview#showall" target="bibliowin">https://emedicine.medscape.com/article/2087113-overview#showall</a></li>
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