DKD is typically defined by persistent albuminuria (urinary albumin excretion of more than 30 mg/24 h or a urine albumin-to-creatinine ratio exceeding 30 mg/g), a sustained reduction in the estimated glomerular filtration rate (eGFR) less than 60 mL/min per 1.73 m2, or a combination of both for at least three months [3]. Here, ALB is linked to diabetic kidney disease.