Vitamin B12

Source	Blood
Mnemonic	B12
Specimen Requirements	1 x 3 mL or 4.5 mL light green (mint) top PST tube. Gold top SST tube also acceptable. 0.2 mL heparinized plasma or serum Minimum Whole Blood Volumes for Micro-Collections using Microtainers
Specimen Handling
Additional Information
Testing Location	Chemistry-DSC
Testing Frequency	Daily
Alternate Name(s)	Cyancobalamin, Cobalamin
Reference Interval	155 - 700 pmol/L

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