A wrapper function for the nankivell_spk() vectorised function to calculate the eGFR using the Nankivell-SPK formula using serum creatinine in mg/dl. To allow for serial measurements over time, such as for transplant follow-up data, there is an optional offset = n parameter which increases the age value used in the equation by n years. It has not been possible to run automated tests to confirm the accuracy of this function, so please use with caution.
nankivell_spk_US(SCr, Age, Sex, Weight, Height, Offset = 0)numeric vector of serum creatinine in µmol/l (or mg/dl if units = "US")
numeric vector of patient ages in years
character vector of sex ("F" for female, "M" for male)
numeric vector of patient weights in kilograms
numeric vector of patient heights in metres
non-vectorised optional numeric parameter for offset in years
numeric vector of eGFR values
Reference: Nankivell BJ, Chapman JR, Allen RD: Predicting glomerular filtration rate after simultaneous pancreas and kidney transplantation. Clin Transplant 1995; 9(2): 129-134
nankivell_spk_US(SCr = 1.33, Age = 74, Sex = "M", Weight = 172, Height = 172) # 49.0
#> [1] 77.90995