Vitamin Deficiency Test lab tests in Personalabs Lab Test Test Cost Folic Acid/ Folate/ Vitamin B9 Blood Test - Folate Blood Test $64.00 Homocysteine Blood Test - Homocysteine Test $77.00 Vitamin C Blood Test $85.00 Folate, RBC Blood Test $64.00 QuestAssureD™ 25-Hydroxyvitamin D (D2, D3), LC/MS/MS $81.00 Vitamin E Blood Test - Vitamin E Blood Test $83.00 Vitamin B12 and Folates Blood Test - Vitamin B12 deficiency blood test $73.00 Vitamin B12 Blood Test - Vitamin B12 Testing $49.00 Vitamin D, 25-hydroxy Blood Test - Vitamin D Blood Test $81.00 Vitamin B6 Blood Test $102.00 Comprehensive Vitamin Profile Blood Test $426.00 Vitamin B1 - Thiamine Blood Test - Thiamine Blood Test $87.00 Parietal Cell Antibody, ELISA $237.00 Methylmalonic Acid Blood Test - Methylmalonic Acid Test (Blood) $103.00