Vitamin B12 and Folate
0070160
Ordering Recommendation
Aids in detection of vitamin B12 and folate deficiency in individuals with macrocytic or unexplained anemia, or unexplained neurologic disease.
Mnemonic
B12/FOL
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Serum separator tube. Also acceptable: Green (sodium or lithium heparin).  
Specimen Preparation
Protect from light during collection, storage, and shipment. Allow serum to clot completely at room temperature before centrifuging. Transfer 2 mL serum or plasma to an ARUP Amber Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
EDTA plasma. Hemolyzed or refrigerated specimens exposed to light for more than 24 cumulative hours.  
Remarks
  
Stability
After separation from cells: Ambient: 2 hours; Refrigerated: 8 hours; Frozen: 3 months  
Reference Interval
 
 
Test Number Components Reference Interval
0070150Vitamin B12  Effective December 2, 2013
180-​914 pg/mL
0070070Folate, Serum Less than or equal to 3.9 ng/mL: Deficient
4.0-​5.8 ng/mL: Indeterminate
Greater than or equal to 5.9 ng/mL: Normal               
Interpretive Data
 
Note
 
CPT Code(s)
82607; 82746
Components
Component Test Code*Component Chart Name
0070070Folate, Serum
0070150Vitamin B12
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • B12 & Folate
  • B12/Folate, Serum
  • Folate & Vitamin B12
  • Folate and Vitamin B12