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Portrait of Andrew S. Levey

Photo: Martha Stewart / Asltufts. Source · CC BY-SA 4.0

Renal function

Andrew S. Levey

Research profile. Andrew S. Levey is not affiliated with or endorsed by MedMaths.

Nephrology, GFR estimation and chronic kidney disease classification

CKD-EPI 2021 Creatinine and Creatinine-Cystatin C Equations — CKD-EPI Collaboration

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Overview

Andrew S. Levey, MD, is a nephrologist and professor emeritus at Tufts whose career has focused on glomerular filtration rate estimation, chronic kidney disease definition and clinical practice guidelines. Tufts CKD-EPI organisational material identifies him as the founder of CKD-EPI and a former co-director. He was the senior author of the 2021 New England Journal of Medicine paper describing new creatinine- and cystatin C-based GFR estimating equations without a race coefficient.

Specialty
Nephrology, GFR estimation and chronic kidney disease classification
Institutions
Tufts Medical Center; Tufts University School of Medicine

Formula history

Research contributions

CKD-EPI 2021 Creatinine and Creatinine-Cystatin C Equations — CKD-EPI Collaboration

Based on research published by Andrew S. Levey.

Used for: Adults aged 18 years and older when the 2021 CKD-EPI creatinine or creatinine-cystatin C equation is appropriate for the population and standardized assays in use

Evidence trail

Original research

Inker LA, Eneanya ND, Coresh J, Tighiouart H, Wang D, Sang Y, Crews DC, Doria A, Estrella MM, Froissart M, Grams ME, Greene T, Grubb A, Gudnason V, Gutiérrez OM, Kalil R, Karger AB, Mauer M, Navis G, Nelson RG, Poggio ED, Rodby R, Rossing P, Rule AD, Selvin E, Seegmiller JC, Shlipak MG, Torres VE, Yang W, Ballew SH, Couture SJ, Powe NR, Levey AS. Inker LA, et al. — New Creatinine- and Cystatin C-Based Equations to Estimate GFR without Race. New England Journal of Medicine. 2021;385(19):1737-1749

DOI: 10.1056/NEJMoa2102953View on PubMed (PMID 34554658)Publisher page

Primary 2021 CKD-EPI Collaboration publication describing new creatinine- and creatinine-cystatin C equations without a race coefficient. Researcher profiles linked here are the first and senior authors and must not be interpreted as the complete author group.

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Each link below has a recorded relationship type. It may represent formula authorship, co-authorship, historical foundation or interpretation research; none implies endorsement or involvement from Andrew S. Levey.

Formula co-author

eGFR Calculator (CKD-EPI 2021)

Calculate the modern race-free 2021 CKD-EPI eGFR, with optional cystatin C and BSA adjustment.

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eGFR vs CrCl: which renal function estimate should you use?

Understand how CKD-EPI eGFR and Cockcroft-Gault CrCl differ, why their values may not match, and how to follow the estimate and units required by the current source.

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Researchers connected to this work

LA
Renal function

Lesley A. Inker

Nephrology and kidney-function measurement

Known for

CKD-EPI 2021 Creatinine and Creatinine-Cystatin C Equations — CKD-EPI Collaboration

1 publication 1 linked calculatorProfile

About this profile

This source-based research reference profile draws on the original publications above and verified external sources. Andrew S. Levey is not affiliated with or endorsed by MedMaths. Unconfirmed fields are left blank rather than estimated.

tuftsmedicine.org facultyprofiles.tufts.edu tuftsmedicine.org asn-online.org pubmed.ncbi.nlm.nih.gov

Reference data verified: 2026-08-14

See the methodology and editorial policy for the wider sourcing process.

Profile at a glance

Formulas
1
Publications
1
Verified links
1

Research focus

Glomerular filtration rate estimationChronic kidney disease classificationClinical practice guidelines

Research profiles

  • Tufts Medicine profile
  • Tufts University faculty profile
  • American Society of Nephrology biography

Source integrity

Portraits appear only when reuse rights have been verified. Formula-to-calculator links appear only when the relationship is explicitly recorded.

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