WHO criteria	NCEP ATP III criteria	IDF criteria
Metabolic syndrome defined by the following criteria	Presence of three or more of the following criteria defines	Metabolic syndrome identified by the following criteria
Insulin Resistance identified by one of the following: Type – 2 diabetes mellitus. Impaired fasting glucose Impaired glucose tolerancePlus any two of the following:	metabolic syndrome: Central Obesity: Waist circumference > 102 cm(Males), >88 cm (Females)	Waist Circumference: Men > 90cm Women > 80cmPlus two or more of the Following
Fasting Plasma Triglycerides >150 mg/dl (>1.7 mmol/L)	Fasting Plasma Triglycerides >150 mg/dl or on specific medications	Fasting plasma triglycerides ≥150 mg/dl or on specific medication
Antihypertensive medication and/or high BP (>140 mmHg systolic or >90 mmHg diastolic)	Blood pressure >130 mm systolic OR >85 mm diastolic or specific medication. Low HDL Cholesterol:	Blood pressure of ≥130 systolic or ≥85 mm diastolic or previous diagnosis or on specific medication
HDL Cholesterol < 35 mg/dl (<0.9 mmol/L) in men or <39 mg/dl (1.0 mmol/L) in women	HDL cholesterol <40 mg/dl and <50 mg/dl for males and females respectively or on Specific medication	HDL cholesterol <40 mg/dl and <50 mg/dl for men and women respectively or on specific medication
BMI >30kg/m2 and/or waist/hip ratio >0.9 (men), >0.85 (women)
Urinary albumin excretion rate >20 mg/min or albumin/creatinine ratio >30 mg/g	Fasting plasma glucose: >110 mg/dl or specific medication or previously diagnosed type-2 diabetes	Fasting plasma glucose >100 mg/dl or previously diagnosed type-2 diabetes