| bsa | Body surface area (BSA) |
| ckd_stage | KDIGO CKD stage from eGFR |
| convert_creatinine | Convert serum creatinine between mg/dL and umol/L |
| egfr_bis_cr | Berlin Initiative Study (BIS1) creatinine eGFR (2012) |
| egfr_capa | CAPA paediatric cystatin C eGFR (2014) |
| egfr_ckdepi_cr_2009 | CKD-EPI 2009 creatinine eGFR (with race coefficient) |
| egfr_ckdepi_cr_2021 | CKD-EPI 2021 creatinine eGFR (race-free) |
| egfr_ckdepi_cr_cys_2021 | CKD-EPI 2021 combined creatinine + cystatin C eGFR (race-free) |
| egfr_ckdepi_cys_2012 | CKD-EPI 2012 cystatin C eGFR |
| egfr_ckdepi_cys_2021 | CKD-EPI 2021 cystatin C eGFR (race-free) |
| egfr_ckid_u25_cr | CKiD U25 creatinine eGFR |
| egfr_ckid_u25_cr_cys | CKiD U25 combined creatinine + cystatin C eGFR |
| egfr_ckid_u25_cr_extended | CKiD U25 extended creatinine eGFR (to age 30) |
| egfr_ckid_u25_cys | CKiD U25 cystatin C eGFR |
| egfr_cockcroft_gault | Cockcroft-Gault creatinine clearance |
| egfr_ekfc_cr | EKFC creatinine eGFR (2021) |
| egfr_ekfc_cr_cys | EKFC combined creatinine + cystatin C eGFR (2023) |
| egfr_ekfc_cys | EKFC cystatin C eGFR (2023) |
| egfr_fas_cr | Full Age Spectrum (FAS) creatinine eGFR |
| egfr_lund_malmo | Lund-Malmoe Revised creatinine eGFR (2011) |
| egfr_mdrd | MDRD 4-variable eGFR (IDMS-standardised) |
| egfr_neonatal | Neonatal creatinine eGFR (2022) |
| egfr_schwartz | Schwartz bedside paediatric eGFR (2009) |
| gfr_bsa_adjust | Normalise or de-normalise GFR using body surface area |