Lactate Dehydrogenase (LDH) test is a blood test that measures the level of the enzyme lactate dehydrogenase (LDH) in the blood. LDH is found in many body tissues, including the heart, liver, kidneys, muscles, and red blood cells.

Pre-test preparation: There is no specific preparation required for a LDH test.

Testing method: A small sample of blood is taken from a vein in your arm and sent to a laboratory for analysis.

Common symptoms that may prompt your doctor to order a LDH test include: jaundice (yellowing of the skin and eyes), abdominal pain, and dark urine.

Diagnosis: Elevated levels of LDH in the blood can indicate damage to organs or tissues such as the heart, liver, or kidneys. It is also used as a marker of certain types of cancer, such as lymphoma, and to monitor treatment for these conditions.

Reference range: The normal range for LDH in the blood varies depending on the laboratory that performs the test, but typically ranges from 125-225 U/L.

Normal values may vary depending on the laboratory that performs the test.

Medical disclaimer: The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. It is important to follow the instructions given by your doctor or the laboratory performing the test. If you have symptoms that suggest organ or tissue damage or have been advised to have a LDH test, it is important to work closely with your doctor to understand the results and any further actions that may be necessary to manage your health.