B12 + folate
Days test started:
Specimen Type/Volume1 mL serum.
Shipping InformationShip in insulated container with freezer packs.
Collection ProtocolCollect blood into a red-top tube, after an overnight fast (8-10 hrs).
This test is sent to an external laboratory. Shipping (test code: xtrnv) and handling (test code: xhand) fees are also applicable on each submission. External test price is subject to change.