VITAMIN B12
Test Code: LAB2466
Synonym
Vitamin B12 Level; B12; Cobalamin; Vitamin B-12; VitB12
Specimen Type
Lithium heparin plasma
Alternate Specimen Type
Lithium heparin plasma from plain green top or serum from SST or plain red top.
Specimen Container
Mint Green top (PST) or 2 microtainers
Preferred Volume
1.0 mL plasma
Minimum Collection Volume
0.5 mL plasma
Specimen Handling
Separate plasma from cells within 2 hours.
Collection Procedure
Note that this test requires more sample volume than most Chemistry tests.
Unacceptable Conditions
Hemolysis greater than 1+
If also testing for Folate, any level of hemolysis is unacceptable.
Plasma other than lithium heparin.
If also testing for Folate, any level of hemolysis is unacceptable.
Plasma other than lithium heparin.
Temperature
Refrigerated.
Methodology
Chemiluminescent
Stability
Room Temp 8 hours Refrigerated 48 hours Frozen (-20 °C) Acceptable, separated from cells and gel. Thaw only once.
Schedule
Daily, all shifts
Place of Service
Sacred Heart Medical Center
Department
PSHMC Chemistry
Select Print Details
Select an option which you would like to print: