eGFR Calculator · CKD Stage
Enter the creatinine, age, and sex from your blood test to estimate GFR with the CKD-EPI 2021 equation and see your kidney-function stage in plain language.
🩸 Enter your blood test results
The creatinine value from your blood test report
Enter only if you have a urine test result (mg/g). Enables the KDIGO risk map.
🧪 Serum creatinine reference range
| Sex | Reference (mg/dL) |
|---|---|
| Male | 0.7 ~ 1.3 |
| Female | 0.5 ~ 1 |
※ Reference ranges vary by laboratory and assay. Do not judge kidney function by creatinine alone — read it together with eGFR.
📊 eGFR & CKD stage
Estimated GFR (eGFR)
92
mL/min/1.73㎡
G1 · Normal or highCKD stage: G1 (≥90)
Filtration is in the normal range (≥90). Without other markers of kidney damage (albuminuria, hematuria), this is not classified as CKD. Monitor about once a year if you have risk factors.
Legacy MDRD (IDMS-175) reference value. CKD-EPI 2021 is the recommended standard.
Based on CKD-EPI Creatinine 2021 (race-free)
🗺️ KDIGO risk (eGFR × albuminuria)
Enter a urine ACR to see CKD-progression risk (green, yellow, orange, red) on the map.
| CKD stage | A1 (<30) | A2 (30–300) | A3 (>300) |
|---|---|---|---|
| G1 ≥90 | |||
| G2 60~89 | |||
| G3a 45~59 | |||
| G3b 30~44 | |||
| G4 15~29 | |||
| G5 <15 |
📅 Next test D-day
Enter your test date to save a suggested re-test date and countdown.
※ Intervals are general guidance only. Follow your clinician's instructions for re-testing.
Formula & source references
- 📐 eGFR formula: CKD-EPI Creatinine 2021 (race-free) — Inker LA et al., NEJM 2021;385:1737-1749
- 📋 CKD staging, albuminuria & risk: KDIGO 2012/2024 CKD Guideline
- 🏥 Korea: Korean Society of Nephrology (recommends CKD-EPI 2021)
- 🔄 Unit conversion: 1 mg/dL = 88.42 μmol/L
- ✅ Reference verified: 2026-07-06
eGFR 가이드 · FAQ · bal.pe.kr 건강 도구
계산 방법 상세는 Guide, 자주 묻는 질문은 FAQ, 데이터 출처·운영 정보는 About 참조. 마지막 업데이트 2026-07-06.