Kidney Function Test lab tests in Lab Testing API Lab Test Test Cost BUN/Creatinine Ratio Blood Test $25.00 Creatinine Clearance $43.00 Phosphate (as Phosphorus) Blood Test - Phosphate test $24.00 Microalbumin, Random Urine with Creatinine Test $52.50 Renal Function Panel Blood Test - Renal Function Panel $26.50 Urea Nitrogen (BUN) Blood Test $25.00 Ammonia, Plasma Blood Test - Ammonia Blood Test $37.50 Creatinine Blood Test - Serum Creatinine Test $24.00 Albumin Blood Test - Albumin Blood Test $24.00