Lactate Dehydrogenase

LDH is an enzyme indicating tissue damage, with elevated levels suggesting cell damage or disease.

📋 About This Biomarker

Lactate Dehydrogenase (LDH) is an enzyme found in nearly all body tissues, playing a key role in the conversion of lactate to pyruvate in the body's metabolic process. LDH is released into the bloodstream when cells are damaged or destroyed. Therefore, elevated LDH levels can indicate tissue damage or disease. High LDH levels are associated with a variety of conditions, including heart attack, liver disease, muscle injury, hemolytic anemia, infections, and certain cancers. LDH is not specific to any single disease but is used in conjunction with other tests to diagnose and monitor these conditions. Monitoring LDH levels helps evaluate the extent of tissue damage and the effectiveness of treatment in various diseases.

🎯 Why We Test This

Measuring LDH levels is essential for diagnosing and monitoring conditions associated with tissue damage and cell destruction. It provides valuable insights into the extent of tissue damage, helping to diagnose conditions such as heart attack, liver disease, muscle injury, hemolytic anemia, infections, and cancers. Regular monitoring of LDH levels is particularly important for individuals with chronic conditions that cause tissue damage, as it helps assess disease progression and the effectiveness of treatments. Maintaining LDH levels within the normal range is crucial for ensuring overall health and minimizing tissue damage.

⚠️ What Affects It

Factors influencing LDH levels include tissue damage from any cause (such as heart attack, liver disease, muscle injury, or hemolytic anemia), infections, certain medications (like chemotherapy drugs), and chronic conditions such as cancer. Exercise, alcohol consumption, and certain medical procedures can also impact LDH levels.

📈 How to Improve

For high LDH levels, identifying and treating the underlying cause of tissue damage, such as managing heart disease, liver conditions, infections, or cancers, is crucial. This may involve medications, lifestyle changes, or specific treatments for the underlying condition. For levels close to being high, monitoring and managing contributing factors like physical strain or mild infections can help maintain balanced LDH levels. For low LDH levels, no specific intervention is typically needed, but maintaining overall health and monitoring for any potential underlying conditions is beneficial. Regular monitoring and consultation with a healthcare provider ensure that LDH levels remain within the optimal range, reflecting good overall health and minimal tissue damage.

📊 Understanding Your Results (U/L)

Low (< 120 U/L)
Low LDH levels are uncommon and usually not clinically significant. They may indicate a low level of tissue turnover or a reduced rate of cell destruction. However, maintaining overall health and monitoring for any potential underlying conditions that could affect LDH levels is beneficial.
Optimal (120 - 250 U/L)
Normal LDH levels indicate the absence of significant tissue damage or cell destruction. This balance suggests effective cellular function and overall good health, with no acute or chronic conditions causing elevated LDH. LDH levels near the upper limit may suggest mild tissue damage or stress. This can result from factors like intense exercise, minor injuries, or mild infections. Monitoring these levels and addressing contributing factors, such as reducing physical strain and managing infections, can help maintain balanced LDH levels. LDH levels near the lower end are generally not a cause for concern and indicate minimal tissue damage. This suggests that the body is not experiencing significant cellular stress or damage, reflecting good health and proper cellular metabolism.
High (> 250 U/L)
Elevated LDH levels indicate tissue damage or cell destruction. Causes can include myocardial infarction (heart attack), liver diseases (such as hepatitis or cirrhosis), muscle injuries (like rhabdomyolysis), hemolytic anemia, infections, and cancers (such as lymphoma or leukemia). Symptoms depend on the underlying condition and may include chest pain, fatigue, jaundice, muscle pain, or fever. Identifying and treating the underlying cause is crucial for managing high LDH levels and preventing further tissue damage.
Also known as: LDH, LD