{"id":"egfr","name":"eGFR (Creatinine-based)","shortName":"eGFR","aliases":["eGFR","Estimated GFR","eGFR (CKD-EPI)","eGFR CKD-EPI 2021","eGFRcr","eGFR MDRD","eGFR Non-African American","GFR, Estimated","TFGe","Estimated Glomerular Filtration Rate","Estimated Glomerular Filtration Rate (eGFR)","Glomerular Filtration Rate, Estimated","eGFR (CKD-EPI 2021)","eGFR (CKD-EPI Creatinine 2021)","eGFRcr (CKD-EPI 2021)","eGFR (MDRD)","Calculated GFR","Creatinine-based eGFR","Glomerular Filtration Rate Estimated"],"abbreviations":["eGFR","eGFRcr","TFGe"],"loinc":[{"code":"98979-8","primary":true},{"code":"62238-1","primary":false},{"code":"33914-3","primary":false},{"code":"77147-7","primary":false},{"code":"69405-9","primary":false},{"code":"48642-3","primary":false}],"specimen":"calculated","units":[{"ucum":"mL/min/{1.73_m2}","display":"mL/min/1.73 m²"},{"ucum":"mL/s/{1.73_m2}","display":"mL/s/1.73 m²"}],"referenceRanges":[{"population":"18+","low":60,"high":null,"unit":"mL/min/{1.73_m2}","unitDisplay":"mL/min/1.73 m²","note":"Adult labs print this as a floor of 60 (written '>=60' or '>60'), and many cap high results (for example '>90') because the equation is less precise at high values. It is the level below which KDIGO says reports should flag the result as low, not the middle 95% of healthy people. Averages are much higher in younger adults and decline with age, for example about 116 at ages 20 to 29 and about 75 at 70 and older (National Kidney Foundation). The equation already accounts for age and sex, so labs print no separate ranges for them. Adult equations are not used under 18.","sources":[{"title":"Creatinine With eGFR (test 3005478)","url":"https://ltd.aruplab.com/Tests/Pub/3005478","publisher":"ARUP Laboratories"},{"title":"CRTS1 - Creatinine with Estimated Glomerular Filtration Rate (eGFR), Serum","url":"https://www.mayocliniclabs.com/test-catalog/overview/48216","publisher":"Mayo Clinic Laboratories"},{"title":"KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease","url":"https://kdigo.org/wp-content/uploads/2024/03/KDIGO-2024-CKD-Guideline.pdf","publisher":"Kidney International 105(4S):S117-S314","year":2024},{"title":"Estimated Glomerular Filtration Rate (eGFR)","url":"https://www.kidney.org/kidney-topics/estimated-glomerular-filtration-rate-egfr","publisher":"National Kidney Foundation"}]},{"population":"18+","low":1,"high":null,"unit":"mL/s/{1.73_m2}","unitDisplay":"mL/s/1.73 m²","note":"The same cutoff as 60 mL/min/1.73 m², written in mL/s as printed by laboratories in the Czech Republic (1 mL/s = 60 mL/min). Use the row that matches the unit on the report.","sources":[{"title":"eGFR (CKD-EPI) - výpočet, Laboratorní příručka Centrální laboratoře NNB","url":"https://bulovka.cz/wp-content/oddeleni/laboratore/laboratorni-prirucka/_LP_17339.htm","publisher":"Nemocnice Na Bulovce, Prague","year":2021}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"An estimate of how well your kidneys filter blood, worked out from your creatinine, age and sex.","url":"https://bloodtesttracker.com/markers/egfr","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}