Lactic Acid

What Affects the Test

Reasons you may not be able to have the test or why the results may not be helpful include:

• Taking large doses of the medicine epinephrine.
• Taking medicines, such as isoniazid for tuberculosis or metformin (Glucophage) for diabetes.
• Using a lot of acetaminophen (such as Tylenol) or alcohol.
• Exercising prior to this test.
• Clenching a fist while the blood sample is being drawn. Also, lactic acid levels may be higher if the tourniquet is around your arm for a long time.

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Author:	Douglas Dana Jan Nissl, RN, BS	Last Updated: November 30, 2006
Medical Review:	Renée M. Crichlow, MD - Family Medicine Adam Husney, MD - Family Medicine Brian Leber, MDCM, FRCPC - Hematology
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