Lactate Dehydrogenase, Serum

The lactate dehydrogenase (LDH) enzyme plays a crucial role in the process of converting lactate into pyruvate (a type of sugar), which is then used by the cells for energy. Under normal circumstances, it exists at low levels in the blood. However, during severe tissue damage, LDH levels rise significantly, serving as a valuable biomarker for the diagnosis of tissue damage. The Lactate Dehydrogenase, Serum test measures the level of LDH enzyme that can indicate tissue damage or disease processes affecting different organs in the body. However, this test does not give clues about the location of the damage.

Your doctor may recommend this test if you experience symptoms such as fatigue, muscle weakness, chest pain or discomfort, breath shortness, unexplained weight loss, fever, etc, suggestive of tissue damage. Additionally, the Lactate Dehydrogenase, Serum test may also be used to monitor the progression of certain diseases and conditions and evaluate the effectiveness of ongoing treatment.

Higher than normal LDH levels can be seen in various conditions such as muscle injury, liver disease, and heart attacks, and the test is not specific to a single disease or organ system. Hence, additional tests such as imaging studies, other blood tests, or tissue biopsies may be necessary to determine the exact cause of increased LDH levels and confirm a diagnosis.

Usually, no special preparation is needed before undergoing the Lactate Dehydrogenase, Serum test. However, it is important to tell your doctor about any medications and supplements you take, as certain medications can affect your test results. Additionally, it is advised to avoid any strenuous exercise or alcohol consumption a few hours before the test, as these factors can interfere with the test results.

Reference ranges are approximate and may vary based on factors such as age, gender, medical history, etc. Abnormal test results require an expert interpretation; therefore, always consult a doctor for a proper understanding of the test results.