Sign in →

Test Code VIT B12 Vitamin B12 Assay

Performing Laboratory

Beckley Cancer Center Laboratory 304-461-2222
Greenbrier Valley Medical Center Laboratory 304-647-6060
Memorial Hospital Laboratory- Automated Procedures  304-388-5953       
Parkersburg Laboratory 304-865-3679
Teays Valley Hospital Laboratory 304-757-1770

Specimen Requirements

Plasma- Mint Green, Dark Green Lithium Heparin or Serum- SST gold top, red top

Allow SST or red top to completely clot

Spin and physically separate plasma/serum from contact with cells as soon as possible

4 mL of plasma/serum (minimum 2 mL)

 

Additional sample type that can be used ONLY at Beckley, Greenbrier, and Parkersburg

EDTA plasma

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient
  • Hemolyzed 

Additional rejections ONLY at Beckley, Greenbrier, and Parkersburg 

  • Turbid
  • Lipemic

Storage and Stability

Memorial and Teays Only 

Room temperature 15-30oC 8 hrs
Refrigerated 2-8oC 24 hrs
Frozen <-20oC Not specified

Additional storage and stability ONLY at Beckley, Greenbrier, and Parkersburg

Refrigerated 2-8oC 7 days
Frozen <-20oC 4 weeks

Avoid repeated freeze-thaw cycles.

Reference Values

180.0-914.0 pg/mL

Methodology

Memorial and Teays Chemiluminescent  immunoenzymatic competitive assay
Beckley, Greenbrier, Parkersburg Competitive binding immunoassay

Days Test Set Up and Turnaround

Monday through Sunday, Continuously

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

Beckley and Parkersburg Only-Monday through Friday 

CPT Coding

82607