72 Hour Fecal Fat Test measures the fat level in the stool, to diagnose malabsorption. In order to get tested, you may consume 50 to 150 grams of fat a day for 2-3 days before and during the stool sample collection.
A healthy person’s stool should contain 2 to 7 grams over 24 hours, and 6 to 21 grams over 72 hours in such conditions.
What Does the Result Mean?
Positive: A positive result indicates that the fat may not be well absorbed; you may have malabsorption.
Negative: Normally, the result should be negative. But a negative result does not ensure the absence of malabsorption. A follow-up quantitative test may be needed.
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