Original Article

Carbohydrate Challenge Tests: Do You Need to Measure Methane?

Objective: Breath tests that measure hydrogen (H2) have been judged reliable for the detection of lactose maldigestion (LM) and fructose malabsorption (FM). Recently, methane (CH4) testing has been advocated and measurement of CH4 in addition to H2 has been shown to increase the diagnostic accuracy for LM. Purpose: This study…