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Calculate eGFR Using CKD-EPI 2021 Cystatin Equation

Source: R/egfr.R
ckdepi_2021_egfr_cystatin.Rd

[Deprecated]

This function is deprecated; use egfr() with method = "CKDEPI 2021 cystatin".

Usage

ckdepi_2021_egfr_cystatin(sexf, age, creat, cystc)

Arguments

sexf

a boolean representing if the patient is female.

age

age of patient in years

creat

serum creatinine levels in mg/dL.

cystc

serum cystatin C levels in mg/L.

Value

eGFR in mL/min/1.73 m^2

Details

The CKD-EPI 2021 creatinine-cystatin equation: $$eGFR = 135 \cdot \min(S_{cr}/\kappa, 1)^\alpha \cdot \max(S_{cr}/\kappa, 1)^{-0.544} \cdot \min(S_{cys}/0.8, 1)^{-0.323} \\ \cdot \max(S_{cys}/0.8, 1)^{-0.778} \cdot 0.9961^A \cdot 0.963^F$$

where:

  • \(S_{cr}\) = serum creatinine (mg/dL)

  • \(S_{cys}\) = serum cystatin C (mg/L)

  • \(\kappa\) = 0.7 (female) or 0.9 (male)

  • \(\alpha\) = -0.219 (female) or -0.144 (male)

  • \(A\) = age (years)

  • \(F\) = 1 (female) or 0 (male)

Examples

e <- egfr(TRUE, FALSE, 24, 1, cystc = 2, method = "CKDEPI 2021 cystatin")