Vitamin Deficiency Test lab tests in RequestATest Lab Test Test Cost Vitamin B3 (Niacin) Test $259.00 Folate Blood Test - Folate Blood Test $49.00 Vitamin A Blood Test - Vitamin A blood test $69.00 Vitamin B12 Blood Test - Vitamin B12 Testing $49.00 Vitamin C Blood Test $69.00 Vitamin B6 Blood Level Test $95.00 Folate Blood Test $49.00 Vitamin B1 Blood Test - Thiamine Blood Test $69.00 Vitamin B3 (Niacin) Test $179.00 Vitamin D, 1, 25-dihydroxy Blood Test - vitamin d test cost $89.00 Vitamin A Blood Test $59.00 Vitamin B12 and Folates Blood Test $69.00 Homocysteine Blood Test - Homocysteine Test $69.00 Methylmalonic Acid Blood Test $99.00 Vitamin K1 Blood Test $199.00 Vitamin E Blood Test - Vitamin E Blood Test $63.00 Methylmalonic Acid Blood Test - Methylmalonic Acid Test (Blood) $99.00 Methylmalonic Acid Urine Test - Methylmalonic Acid Urine Test $139.00 Vitamin B1 Blood Test $69.00 Vitamin C Blood Test $79.00 Vitamin D, 25-Hydroxy Blood Test - Vitamin D Blood Test $59.00 Vitamin B12 and Folates Blood Test - Vitamin B12 deficiency blood test $59.00 Vitamin B12 Blood Test $49.00 Vitamin K1 Blood Test $149.00 Vitamin C (With Dilution) Blood Test $119.00 Vitamin B6 Blood Level Test $79.00