Kidney Function Test lab tests in Walk-In Lab Lab Test Test Cost Phosphorus Serum Test $28.00 Microalbumin Urine Test, 24-Hour $48.00 Urea Nitrogen (BUN) Serum Test $29.00 Urea Nitrogen (BUN) Serum Test $29.00 Phosphorus Serum Test - Phosphate test $25.00 Renal Function Blood Test Panel - Renal Function Panel $28.00 Cystatin C Blood Test $118.00 Albumin Serum Test $34.00 Creatinine Serum Test - Serum Creatinine Test $25.00 Microalbumin Urine Test, Random - Microalbumin Urine Test $25.00 Creatinine Urine Test, Random $34.00 Ammonia Plasma Test - Ammonia Blood Test $44.00 Albumin Serum Test - Albumin Blood Test $29.00 Creatinine Clearance 24-Hour Urine and Blood Test $57.00 Microalbumin/Creatinine Ratio Urine Test, Random $49.00 Microalbumin/Creatinine Ratio Urine Test, Random $48.00 Creatinine Urine Test, 24-Hour $47.00