Lactic Acid in Fluid (e.g., Blood, Urine, or Other Body Fluids)

Why Is This Test Done?

Your healthcare provider may order this test to check for conditions like low oxygen levels (hypoxia), certain infections, heart or lung problems, or metabolic disorders. It can also help monitor people with conditions like heart failure, kidney disease, or severe illness.

High levels of lactic acid may indicate problems with how your body uses oxygen, such as heart or lung issues, infections, or certain medications. Low levels are less common but could be seen in rare metabolic disorders.

The test typically involves drawing blood or collecting urine. The fluid is then analyzed in a lab to measure lactic acid concentration. Results are compared to a general reference range provided by your healthcare team.

This test is often used to monitor patients with suspected or known conditions like sepsis, shock, heart attack, or severe dehydration.

Lactic acid builds up when your body doesn’t get enough oxygen or when cells can’t break down glucose properly. High levels can stress your organs and may require medical attention.

What Are the Possible Risks?

The risks of this test are usually minimal. Blood draws may cause slight discomfort or bruising, while urine collection is generally painless. Rarely, infections or allergic reactions can occur, especially with certain lab methods.