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Test Code SQ B12FOL, EPIC LAB2768 Vitamin B12 and Folate, Serum



Performing Laboratory

Meriter Laboratories

Specimen Requirements

Specimen Type: Serum-Hemolyzed specimen is not acceptable.

Container/Tube: Serum gel
Specimen Volume: 1.4 mL

Collection Instructions:

1. Fasting.

2. Protect specimen from light.

Precautions: Do not order on patients who have recently received methotrexate or other folic acid antagonist.

Specimen Transport Temperature

Refrigerated/Frozen OK

Reference Values


211-946 pg/mL

4-11 years: 8.6-37.7 ng/mL

12-19 years: 5.0-27.2 ng/mL
20-59 years: 4.4-31.0 ng/mL
≥60 years: 5.6-45.8 ng/mL

Day(s) Test Set Up

Monday through Friday

Specimen Requirements Additional Information

Specimen Stability:Serum is stable refrigerated (2° C-8° C) for 2 days, and frozen (≤-20° C) for 1 month. Freeze only once.

Note: Stability of serum obtained with tubes containing separating gel: 24 hours at 2° C-8° C.

Test Classification and CPT Coding

82607-Vitamin B12