A vectorised function to convert urea to blood urea nitrogen (BUN),
By default the urea is measured in mmol/l but this can be changed to mg/dl by
setting the optional units parameter to "US"
Usage
urea_to_bun(urea, units = "SI")
Arguments
urea
numeric vector of urea levels (mmol/l by default)
units
units for urea ("SI" for mmol/l, "US" for mg/dl)
Value
numeric vector of blood urea nitrogen (BUN) levels in mg/dl