Electrolytes are usually measured as part of a renal profile, which measures sodium, potassium, creatinine and urea. Creatinine is almost completely filtered by the kidneys and increasing serum concentrations correspond with a worsening of the glomerular filtration rate as a function of encroaching kidney failure.
Suspected renal failure (acute/chronic)
|Sample & container required||SST (gold top)|
|Sample volume||0.5 mL|
|Turnaround time||1 day|