Table 1.

ISRNM criteria for the clinical diagnosis of PEW in maintenance dialysis patients

Criteria*
Serum chemistry:
	Serum albumin < 3.8 g per 100 ml
	Serum prealbumin < 30 mg per 100 ml
	Serum cholesterol < 100 mg per 100 ml
Body mass:
	BMI < 23
	Unintentional weight loss over time: 5% over 3 months or 10% over 6 months
	Total body fat percentage < 10%
Muscle mass:
	Muscle wasting: reduced muscle mass 5% over 3 months or 10% over 6 months
	Reduced mid-arm muscle circumference area (reduction > 10% in relation to 50th percentile of reference population)
	Creatinine appearance
Dietary intake:
	Unintentional low dietary protein intake <0.80 g.kg-1.day-1 for at least 2 months
	Unintentional low dietary energy intake <25 kcal.kg-1.day-1 for at least 2 months

*At least three out of the four listed categories (and at least one test in each of the selected category) must be satisfied for the diagnosis of kidney disease related PEW. Optimally, each criterion should be documented on at least three occasions, preferably 2-4 weeks apart.

ISRNM, international society of renal nutrition and metabolism; PEW, protein-energy wasting; BMI, body mass index.