Test ID: FB12V
Vitamin B12 Deficiency Panel
Specimen Type 
Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Submit only 1 of the following specimens:
Preferred
Serum
Draw blood in a plain, red-top tube(s). Serum should be separated from cells within 1 hour from time of collection or kept on ice prior to separation. Pour off 1.0 mL serum into a plastic vial, freeze and ship frozen.
Note: 1. Indicate serum on request form.
2. Label specimen appropriately (serum).
Alternate
Plasma
Draw blood in a heparin (green-top) tube(s). Plasma should be separated from cells within 1 hour from time of collection or kept on ice prior to separation. Pour off 1 mL plasma into a plastic vial, freeze and ship frozen.
Note: 1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Specimens other than | Serum, plasma |
| Anticoagulants other than | Heparin |
| Hemolysis | NA |
| Thawing | Warm reject; Cold OK |
| Lipemia | NA |
| Icteric | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Varies | Frozen (preferred) | |
| Ambient | 24 hours | |
| Refrigerated | ||
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