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Inflammatory & Other Chemistry
Normal range 200-900 pg/mL (148-664 pmol/L SI). Specimen: Serum.
Also known as: cobalamin, B12.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Vitamin B12 (Cobalamin); those can be narrower than the band shown.
| Specimen | Serum |
|---|---|
| Conventional range | 200-900 pg/mL |
| SI range | 148-664 pmol/L |
| Conversion factor | ×0.738 (conventional → SI) |
| Panel | Inflammatory & Other Chemistry |
Convert any Vitamin B12 (Cobalamin) result between units on the unit converter.
The standard teaching reference range for Vitamin B12 (Cobalamin) is 200-900 pg/mL in conventional units, or 148-664 pmol/L in SI units. This value is measured in serum.
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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