Urine protein 4+ does not determine chronic kidney disease (CKD) staging, which is based on glomerular filtration rate (eGFR).
Urine protein 4+ is usually caused by increased protein leakage due to glomerular damage, and cannot determine chronic kidney disease (CKD) stage, CKD stage needs to be judged according to glomerular filtration rate (eGFR). Prolonged urinary protein 4+ will aggravate renal function damage, which may lead to the occurrence of renal failure, and timely intervention is needed, but it cannot determine the stage of kidney disease based on the amount of urinary protein.
Chronic kidney disease staging refers to the classification of CKD into 5 stages based on eGFR.
eGFR ≥90 ml/min is CKD stage 1, 60-89 ml/min is CKD stage 2, 30-59 ml/min is CKD stage 3, 15-29 ml/min is CKD stage 4, and <15 ml/min is CKD stage 5. Therefore, chronic kidney disease stage cannot be determined based on urine protein 4+.
Patients with urine protein 4+ should go to the hospital in time to find out the cause and follow the doctor's instructions for standardized treatment.