Vitamin B 12 / Folic Acid
Order Name
B12 FOLAT
Test Number: 4500850
Revision Date 06/04/2021
Test Number: 4500850
Revision Date 06/04/2021
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Folic Acid (Folate)
|
Chemiluminescence Assay | 2284-8 |
|
Vitamin B12
|
Chemiluminescence Assay | 2132-9 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1 mL (0.5) | Serum | Clot Activator SST | Refrigerated |
| Alternate 1 | 1 mL (0.5) | Plasma | Lithium Heparin PST (Light Green Top) | Refrigerated |
| Instructions | Allow serum to clot fully, then separate serum and plasma within 2 hours of collection. Unacceptable: hemolyzed serum or plasma. Specimen stability: Ambient 8 hours, Refrigerated 7 days, Frozen 1 month |
|||
| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Daily |
| Expected TAT | 1-3 days |
| Clinical Use | Useful in the investigation of macrocytic anemia and work-up of deficiencies seen in evaluate megaloblastic and macrocytic anemias. Also used for diagnosis and investigation of some neurological disorders; and useful in detecting deficiency of folate, monitor therapy with folate; evaluate alcoholic patients; evaluate cause of increase in serum homocysteine level. |
| CPT Code(s) | 82607; 82746 |
| Lab Section | Chemistry |