ALB and chronic kidney disease: Overt CKD is defined by eGFR < 60 mL/min/1.73 m2 of body surface area, and/or by the presence of albuminuria (high 30–300 mg albumin/1 g of urine creatinine or very high > 300 mg albumin/1 g of urine creatinine) for 3 months or more [25].