Kidney Function Test lab tests in Lab Testing API Lab Test Test Cost Creatinine Blood Test - Serum Creatinine Test $29.00 BUN/Creatinine Ratio Blood Test $30.00 Blood Urea Nitrogen Blood Test (BUN) $30.00 Ammonia Plasma Blood Test - Ammonia Blood Test $45.00 Renal Function Panel Blood Test - Renal Function Panel $32.00 Phosphate (as Phosphorus) Blood Test - Phosphate test $29.00 Microalbumin Random Urine with Creatinine Test $63.00 Creatinine Clearance Test $52.00 Albumin Blood Test (ALB) - Albumin Blood Test $32.00