Vitamin Deficiency Test lab tests in Lab Testing API Lab Test Test Cost Quest Vitamin D 25-Hydroxyvitamin D2 & D3 Blood Test $52.50 Parietal Cell Antibody Test $46.00 Vitamin B2 Blood Test (Riboflavin) $68.00 Vitamin B3 Blood Test (Niacin) $73.50 Homocysteine Blood Test - Homocysteine Test $48.00 Vitamin C Blood Test (Ascorbic Acid) $42.00 Vitamin B12 Blood Test (Cobalamin) - Vitamin B12 Testing $31.00 Vitamin E Blood Test (Tocopherol) - Vitamin E Blood Test $56.00 Folate, RBC Blood Test $37.50 Vitamin A Blood Test (Retinol) - Vitamin A blood test $52.00 Vitamin B12 and Folate Panel Blood Test - Vitamin B12 deficiency blood test $39.00 Vitamin K Blood Test $82.00 Folate (Folic Acid) Serum(blood) Test - Folate Blood Test $34.00 Vitamin D, 25 Hydroxy Blood Test - Vitamin D Blood Test $43.00 Intrinsic Factor Blocking Antibody Blood Test $75.00 Beta Carotene Blood Test $47.00 Vitamin B1 Blood Test (Thiamine), Blood - Thiamine Blood Test $55.00 Vitamin B5 (Pantothenic Acid) Blood Test $69.00 Vitamin Blood Test - vitamin d test cost $344.32 Vitamin B6 Plasma Blood Test (Pyridoxal Phosphate) $64.00 Methylmalonic Acid Blood Test (MMA) - Methylmalonic Acid Test (Blood) $99.00 Vitamin D 1,25 Dihydroxy Blood Test (Calcitriol) - vitamin d test cost $85.50