Carbohydrate challenge tests:  do you need to measure methane?
If H2 alone was measured without additional CH4 analysis, 4% of patients with LM and 14% patients with FM would not have been identified.
Protocol-directed management of PN-induced hyperglycemia is superior to ad hoc insulin dosing. Linking insulin to carbohydrate in PN leads to improved glycemic control with a low rate of hypoglycemia.