Any duplication or distribution of the information contained herein is strictly prohibited. Information developed by A. Please discuss with your doctor any questions or concerns you may have. Medical Tests. How to Prepare for the Test The health care provider may tell you to temporarily stop taking certain medicines before the test. How the Test will Feel When the needle is inserted to draw blood, some people feel slight pain. Why the Test is Performed LDH is an enzyme found in many body tissues such as the heart, liver, kidney, skeletal muscle, brain, blood cells, and lungs.
The LDH test helps determine the location of tissue damage. LDH exists in five forms, which differ slightly in structure. LDH-1 is found primarily in heart muscle and red blood cells. LDH-2 is concentrated in white blood cells. LDH-3 is highest in the lung. LDH-3 is concentrated in the lungs, although it is also found in other tissues. When LDH isoenzymes spill into your blood, it indicates damaged or diseased tissue.
The results may tell your healthcare providers which tissue may be damaged or injured. You may need this test if your healthcare provider wants to see if you have a blood disorder, such as anemia, or tissue damage, such as damage to your liver, heart, or other body tissue. Test results may vary depending on your age, gender, health history, the method used for the test, and other things. Your test results may not mean you have a problem. Ask your healthcare provider what your test results mean for you.
This includes cirrhosis and hepatitis. If you have two diseases that have caused more than one LDH isoenzyme to rise, one disease could hide the other. The test is done with a blood sample.
A needle is used to draw blood from a vein in your arm or hand. Having a blood test with a needle carries some risks. These include bleeding, infection, bruising, and feeling lightheaded.
It can help diagnose a number of different conditions including: Recent heart attack Anemia Kidney disease Liver disease, including hepatitis and cirrhosis Pulmonary embolism , a life-threatening blood clot in the lungs. Why do I need an LDH isoenzymes test? What happens during an LDH isoenzymes test?
Will I need to do anything to prepare for the test? You don't need any special preparations for an LDH isoenzymes test. Are there any risks to the test? What do the results mean? Disorders that cause abnormal LDH levels include: Anemia Kidney disease Liver disease Muscle injury Heart attack Pancreatitis Infectious mononucleosis mono If you have questions about your results, talk to your health care provider.
References Hinkle J, Cheever K. Lactate Dehydrogenase; p. Kids Health from Nemours [Internet]. Washington D. Bethesda MD : U. Clinical Applications of Lactate Dehydrogenase Isoenzymes. Ann Clin Lab Sci [Internet].
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