| Reference Notes: |
| 1. The estimated glomerular filtration rate (eGFR) was calculated using the 2021 CKD EPI creatinine equation, which excludes race as a variable. |
| 2. eGFR is not applicable for patients under 18 years of age because the equation is validated only for adults (18 years and older). |
| 3. Accurate GFR estimation requires stable serum creatinine levels. Creatinine-based eGFR may be less reliable in patients with markedly high or low muscle mass, restricted protein intake, creatine supplementation, altered creatinine metabolism, or use of medications that affect tubular secretion of creatinine. |
| 4. Reported eGFR values are standardized to a body surface area of 1.73 m2. |
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| Sources: |
| 1. National Institute of Diabetes and Digestive and Kidney Disease, eGFR Equations for Adults |
| https://www.niddk.nih.gov/research-funding/research-programs/kidney-clinical-research-epidemiology/laboratory/glomerular-filtration-rate-equations/adults Accessed 12 Dec 2025. |
| 2. National Kidney Foundation, Frequently Asked Questions About GFR Estimates |
| https://www.kidney.org/sites/default/files/441-8491_2202_faqs_aboutgfr_v5.pdf Accessed 12 Dec 2025. |
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