Urea breath test referral - UHB

Lactose H2 breath test for lactose intolerance . Hydrogen breath test. In a hydrogen breath test, after an overnight fast, 50 grams of lactose (in a solution with water) are swallowed. If the lactose cannot be digested, enteric bacteria metabolize it and produce hydrogen. This, along with methane, can be detected in the patient's breath by a ... ................
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