Validation of the Doubly Labelled Water Method in Subjects With Type 2 Diabetes Mellitus

DLW (doubly labeled water) method measures isotope dilution spaces and elimination rates to assess total energy expenditure (TEE). After enriching the body water of a subject with DLW (2H and 18O), it is only necessary to collect urine samples at defined time points, usually over a period of 1-2 weeks, so that the measurement can be done in individuals able to engage in their typical habits without restrictions. The resulting TEE measurement represents an integral value over the measurement period.