Renal function tests
E-Zlab is specialized in blood work & medical tests at home & work.

A mere blood sample or urine test or several tests / analyses enable a renal function count. Here are some blood or urinary tests offered and related to the kidneys :
Urea (BUN), Creatinine, Creatinine clearance in the urine, the electrolytes : Na (Sodium) and CL (Chlorine), electrolyte : K (potassium), the protein electrophoresis in the blood, proteinuria, the protein electrophoresis in the urine and creatinine in the urine.