Laboratory Services

Vitamin B12 and Folate

Name: Incyte Diagnostics
Address: 13103 E Mansfield Ave, Spokane Valley, Washington, 99216, USA
Telephone: +1-

Test Description	Vitamin B12 and Folate
Synonym(s)	Folic Acid and Vitamin B12
Test ID	B12FOL
Performing Lab	Incyte Diagnostics
General Information	Aids in detection of vitamin B12 and folate deficiency in individuals with macrocytic or unexplained anemia, or unexplained neurologic disease.
Container Type	SST
Specimen Type	Serum
Specimen Requirements	1 mL B12, 1mL Folate
Alternate Specimen Type	Red top
Specimen Collection / Processing Instructions	SST - Samples should not be taken from patients receiving therapy with high biotin doses (i.e.greater than 5 mg/day) until at least 8 hours following the last biotin administration. Centrifuge within 45 minutes of collection and transfer serum for FOLATE to an Amber Light Protected aliquot tube and serum for B12 to a plastic transport tube.
Minimum Sample Volume	0.50 mL B12, 0.50 mL Folate
Pediatric Min. Volume (if applicable)	500 uL
Stability	2 hours at 15‑25 °C 48 hours at 2‑8 °C 56 days at ‑20 °C (± 5 °C). Freeze only once. Stability of serum obtained with separating tubes: 24 hours at 2-8 °C
Unacceptable Specimen Conditions	Hemolyzed samples
Methodology	Eelectrochemiluminescence Immunoassay “ECLIA”
Estimated TAT	0-2 Days
Testing Schedule	Monday - Saturday
Test Includes	Vitamin B12, Folate
CPT Code(s)	82607 82746
Reference Range	B12: 232-1245 pg/mL Folate: 4.78-24.2 ng/mL
LOINC Code(s)	2132-9, 2284-8