ALB and chronic kidney disease: The Kidney Disease: Improving Global Outcomes (KDIGO) guidelines define CKD based on the following criteria being present for more than 3 months: eGFR <60 mL/min/1.73 m2 or markers of kidney damage (one or more structural or functional abnormalities, albuminuria [urine albumin‐to‐creatinine ratio ≥30 mg/g {≥3 mg/mmol}], urine sediment abnormalities, persistent haematuria, electrolyte and other abnormalities due to tubular disorders, abnormalities detected by histology, structural abnormalities detected by imaging or history of kidney transplantation).12