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</div><div><span>Lactic acid test</span></div></div>
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<article><div id="d-article"><div class="page-info"><div class="page-title"><a name="start" id="start">
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</a><h1 class="with-also" itemprop="name">Lactic acid test</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Lactic acid is mainly produced in muscle cells and red blood cells. It forms when the body breaks down carbohydrates to use for energy when oxygen levels are low. Times when your body's oxygen level might drop include:</p><ul><li>During intense exercise</li><li>When you have an infection or disease that reduces oxygen delivery to your body tissues</li></ul><p>A test can be done to measure the amount of lactic acid in the blood.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>A blood sample is needed. Most of the time blood is <a test="test" href="./003423.htm">drawn from a vein</a> located on the inside of the elbow or the back of the hand.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How to Prepare for the Test</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>DO NOT exercise for several hours before the test. Exercise can cause a temporary increase in lactic acid levels.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test will Feel</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>You may feel slight pain or a sting when the needle is inserted. You may also feel some throbbing at the site after the blood is drawn.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Why the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>This test is most often done to diagnose <a test="test" href="./000391.htm">lactic acidosis</a>.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Normal Results</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Normal results range from 4.5 to 19.8 milligrams per deciliter (mg/dL) (0.5 to 2.2 millimoles per liter [mmol/L]).</p><p>Normal value ranges may vary slightly among different laboratories. Talk to your health care provider about the meaning of your specific test results.</p><p>The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>What Abnormal Results Mean</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Abnormal results mean that body tissues are not getting enough oxygen.</p><p>Conditions that can increase lactic acid levels include:</p><ul><li>Diabetic ketoacidosis</li><li><a test="test" href="./000158.htm">Heart failure</a></li><li>Liver disease</li><li>Lung disease</li><li>Medicines such as beta adrenergic agonists (albuterol, salmeterol), certain HIV medicines, metformin</li><li>Not enough blood containing oxygen getting to a certain area of the body</li><li>Severe infection that affects the entire body (<a test="test" href="./000666.htm">sepsis</a>)</li><li>Very low levels of oxygen in the blood (hypoxia)</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Considerations</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Clenching the fist or having the elastic band in place for a long time while having blood drawn can increase the lactic acid level even if there is no underlying medical condition. This may be misleading to your provider.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Lactate test</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Neligan PJ. How should acid-base disorders be diagnosed? In: Deutschman CS, Neligan PJ, eds. <em>Evidence-Based Practice of Critical Care</em>. 3rd ed. Philadelphia, PA: Elsevier; 2020:chap 59.</p><p>Seifter JL. Acid-base disorders. In: Goldman L, Schafer AI, eds. <em>Goldman-Cecil Medicine</em>. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 110.</p><p>Tallentire VR, MacMahon MJ. Acute medicine and critical illness. In: Penman ID, Ralston SH, Strachan MWJ, Hobson RP, eds. <em>Davidson's Principles and Practice of Medicine</em>. 24th ed. Philadelphia, PA: Elsevier; 2023:chap 9.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 6/20/2023</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Jacob Berman, MD, MPH, Clinical Assistant Professor of Medicine, Division of General Internal Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.</p>
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