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Test Code B12 Vitamin B12 Assay, Plasma or Serum

Methodology

Chemiluminescence Immunoassay

Performing Laboratory

Munson Healthcare Laboratories

Specimen Requirements

Specimen must arrive within 48 hours of draw.

 

Submit only 1 of the following specimens:

 

Plasma

Container/Tube: Green-top (heparin) gel tube.

Microcontainer with heparin and plasma gel separator is also acceptable.

Specimen Volume: 0.5 mL of heparinized plasma
Transport Temperature: Refrigerate
Collection Instructions: Forward promptly.

Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).


Serum
Container/Tube: Gold-top serum gel tube.

Microcontainer with serum gel separator is also acceptable.

Specimen Volume: 0.5 mL of serum
Transport Temperature: Refrigerate
Collection Instructions: Forward promptly.

Note: 1. Indicate serum.
2. Label specimen appropriately (serum).

Reference Values

132-653 pg/mL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82607