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CKD Stages Classification:
Stage 1: GFR ≥90 mL/min/1.73m² with kidney damage
Stage 2: GFR 60-89 mL/min/1.73m² with kidney damage
Stage 3a: GFR 45-59 mL/min/1.73m²
Stage 3b: GFR 30-44 mL/min/1.73m²
Stage 4: GFR 15-29 mL/min/1.73m²
Stage 5: GFR <15 mL/min/1.73m² (Kidney failure)
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Chronic Kidney Disease (CKD) staging is a classification system that categorizes kidney function based on glomerular filtration rate (GFR) and the presence of kidney damage. The staging system helps healthcare providers determine the severity of kidney disease and guide treatment decisions.
CKD is classified into 5 stages based on GFR measurements:
Stage 1: GFR ≥90 mL/min/1.73m² with evidence of kidney damage
Stage 2: GFR 60-89 mL/min/1.73m² with evidence of kidney damage
Stage 3a: GFR 45-59 mL/min/1.73m²
Stage 3b: GFR 30-44 mL/min/1.73m²
Stage 4: GFR 15-29 mL/min/1.73m²
Stage 5: GFR <15 mL/min/1.73m² (Kidney failure)
Note: For stages 1 and 2, evidence of kidney damage (such as proteinuria, abnormal imaging, or pathological abnormalities) must be present in addition to the GFR criteria.
Details: CKD staging helps determine appropriate treatment plans, monitor disease progression, predict complications, and guide decisions about dialysis or transplantation. Early detection and management can slow disease progression.
Tips: Enter your GFR value in mL/min/1.73m². The calculator will determine your CKD stage based on the standard classification system. Remember that stages 1 and 2 require evidence of kidney damage in addition to the GFR value.
Q1: What is GFR?
A: Glomerular Filtration Rate (GFR) is the best measure of kidney function. It represents how much blood the kidneys filter each minute.
Q2: Can CKD stage change over time?
A: Yes, CKD can progress through stages over time, though proper management can slow or sometimes stabilize the progression.
Q3: What does 'kidney damage' mean for stages 1 and 2?
A: Kidney damage can include protein in urine (albuminuria), abnormal kidney imaging, or pathological abnormalities detected through biopsy.
Q4: How often should GFR be measured?
A: Frequency depends on the stage and stability of CKD. Generally, stage 1-2: annually; stage 3: every 6-12 months; stage 4-5: every 3-6 months.
Q5: Is this calculator a substitute for medical advice?
A: No, this calculator is for educational purposes only. Always consult with a healthcare provider for proper diagnosis and treatment.