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Vitamin B12

Alias:

B(12) Assay, B(12) Assay, B12 + Folate, B12 Assay, B12, Serum, CblC, Cobalamin, Cobalamin Cyanocobalamin, Cobalamin Deficiency, Cyanocobalamin, Vit B12, S, Vitamin B-12 Assay, Serum, Vitamin B12 and Folate, Serum, Vitamin B12, Serum, B(12) Assay, B(12) Assay, B12 + Folate, B12 Assay, Cobalamin, Cyanocobalamin, Vitamin B12 and Folate, Serum

Methodology:

Electrochemiluminescence

Performed:

Monday-Friday 8:00a to 10:00p
Saturday-Sunday 9:00a to 5:00p

Analytical Time:

4 hours

Testing Laboratory:

Pathology Laboratory

Laboratory Section:

Core Laboratory

Vitamin B12

Preferred Collection Container:

SST (Serum Separator)
Red (No Additive)

Also Acceptable Collection Container:

Light Green (Lithium Heparin Plasma Separator Tube)
Green No Gel (Lithium Heparin)
Plasma from Lavender tubes is acceptable but will not route in the Laboratory Information System (Sunquest).

Collection Information:

Collect blood in a SST (Serum Separator) or Red (No Additive). Light Green (Lithium Heparin Plasma Separator Tube), Green No Gel (Lithium Heparin), or Lavender (EDTA) are also acceptable, HOWEVER, if add on testing is requested for Folate, these tubes will not be acceptable for that testing as serum is required.

Transport Information:

Centrifuge and aliquot 1.3 mL of serum or plasma into a plastic transport vial. Send refrigerated.

Minimum Sample Volume: Minimum amount of analytical sample (serum, plasma, urine, CSF, etc.) required to perform an assay once. Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory or 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.

Minimum amount of analytical sample (serum, plasma, urine, CSF, etc.) required to perform an assay once. Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory or 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.

0.4 mL of serum or plasma (approximately 0.8 mL of whole blood based upon a normal patient hematocrit)

Remarks:

Fasting-overnight (12 hour) is the specimen of choice.

Stability

Refrigerated Stability:

48 hours - Preferred

Frozen Stability:

2 months

Vitamin B12

Sunquest Order Code:

VITB12

Epic Number: The test code used to identify this assay in Epic

LAB67

CPT Code:

82607

Vitamin B12

Modified:

7/19/2016 9:33:23 AM