Creatinine- Creatinine is one of the substances that your kidneys normally eliminate from the body. Test checks the kidney filtration abilities.
Urea- elevated level of urea in the bloodstream indicates kidney dysfunction, metabolic disorders and dehydration.
Electrolytes- Sodium and Potassium- testing those two electrolytes helps recognize disturbance in the water- electrolyte balance which occurs in kidney diseases and dehydration.