Ordering Recommendation
Aids in the detection of vitamin B12 or 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.
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 |
---|---|---|
Folate, Serum | Greater than or equal to 5.9 ng/mL | |
Vitamin B12 | 180-914 pg/mL |
Interpretive Data
Folate, 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 |
Compliance Category
FDA
Note
Hotline History
N/A
CPT Codes
82607; 82746
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0070070 | Folate, Serum | 2284-8 |
0070150 | Vitamin B12 | 2132-9 |
* 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
- Folic Acid
- Vitamin B9
Vitamin B12 and Folate