About Lactose Tolerance Test

Lab testing for lactose intolerance. Lactose is a milk sugar and sensitivities to it are also known as lactose intolerance, which affects 60% of adults.

The Lactose Tolerance Test is a laboratory test. Your health care provider can explain what it measures and whether it is appropriate for your situation.

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How to prepare

Most lab tests require a blood or other sample. Follow any instructions given by your healthcare provider or the testing laboratory. Tell your provider about medications, supplements, or recent illnesses that might affect results.