Table 2. Assessment of muscle mass and nutritional status in intensive care unit (ICU).

Characteristics	Tools for muscle mass assessment in ICU	Tools for nutritional status in ICU
Body mass index (BMI)	X	X
Imaging studies including CT scan, MRI and ultrasonography	X
Muscle biopsies	X
Muscle strength tests		X
Neutron activation analysis (IVNAA)	X
Nutrition Risk in Critically Ill Score (NUTRIC)		X
Nutrition-focused physical assessment (NFPA)		X
Physical assessment and anthropometric measurements (mid-upper arm circumference and triceps skinfold thickness)	X	X
Serum alanine aminotransferase (ALT)	X
Serum albumin	X	X
Serum and urine creatinine	X
Serum prealbumin		X
Subjective global assessment (SGA)		X

X, assessment tool.