Level
Recently developed or Improved methods
Other methods
Atomic
Neutron activation analysis
Whole-body 40K counting Tracer dilution
Molecular
Bioimpedance analysis Dual energy X-ray absorptiometry Multi-component models
Underwater weighing Infrared interactance Tracer and gas dilution
Cellular
Tracer dilution
Tissue-System
Computerized axial tomography Magnetic resonance imaging
Ultrasound 24-h urinary creatinine and 3- methyl histidine excretion
Whole body
Anthropometry