Lactic Acid Dehydrogenase (LD) Blood Test

What is the purpose of this test?

Order this Lactate Dehydrogenase (LD) Blood Test, which measures LD levels in the blood to screen and monitor tissue damage. ALD, which stands for lactate dehydrogenase, is a protein that acts as an enzyme to facilitate energy production within the body. Its function is vital in cellular respiration, converting pyruvate into lactate, which is then used to produce energy. 

LD can be found in various tissues throughout the body, with the highest concentrations being in the:

• Lungs
• Kidneys
• Heart
• Muscles
• Red blood cells

While LD is essential for normal body functions, it is also present in elevated levels in various types of cancer, including lymphoma and myeloma. As the body undergoes cell turnover, some LD is released into the blood or other fluids, which is normal. However, when tissues are damaged or destroyed, LD can leak from the affected area and enter the bloodstream, leading to elevated LD levels. 

Since many illnesses and conditions can cause tissue damage, LD levels can be elevated in various medical conditions. Therefore, measuring LD levels is an essential diagnostic tool that can help determine the presence of certain health conditions. Healthcare providers can gain valuable insights into the patient's health by monitoring LD levels and determining the most appropriate treatment plan.

When should I order a Lactate Dehydrogenase (LD) Blood Test?

Individuals may order this test if they have experienced symptoms related to tissue damage. Common signs or symptoms of this condition may include:

• Infections in the lungs, kidneys, or liver 
• Organ failure
• Hemolysis (premature breakdown of red blood cells)
• Drug reaction