CKD-EPI 2012 cystatin C eGFR — egfr_ckdepi_cys

Estimates GFR from serum cystatin C using the CKD-EPI 2012 cystatin C equation (Inker et al., 2012). The formula is identical to the race-free 2021 cystatin C equation and is retained for backward compatibility.

Usage

egfr_ckdepi_cys_2012(
  cystatin,
  age,
  sex,
  label_sex_male = "male",
  label_sex_female = "female"
)

Arguments

cystatin: Numeric vector of serum cystatin C in mg/L.
age: Numeric vector of age in years.
sex: Vector of sex labels (see label_sex_male/label_sex_female).
label_sex_male, label_sex_female: Values in sex that denote male and female records. Defaults to "male"/"female".

Value

Numeric vector of eGFR in mL/min/1.73m^2.

References

Inker LA, Schmid CH, Tighiouart H, et al. Estimating GFR from serum creatinine and cystatin C. N Engl J Med. 2012;367(1):20-29. doi:10.1056/NEJMoa1114248

Examples

egfr_ckdepi_cys_2012(cystatin = 0.9, age = 55, sex = "male")
#> [1] 92.25303