How do I convert Vitamin B12 (CSF) from pg/mL to pmol/L?

pmol/L = pg/mL × 0.7378. In the other direction: pg/mL = pmol/L × 1.355.

Which units are used for Vitamin B12 (CSF)?

Common units are pmol/L, pg/mL.

Urine & CSF

Vitamin B12 in cerebrospinal fluid (cerebral B12 deficiency)

Also known as: Vitamin B12 (Liquor)

Enter a value in any unit and all other units fill in.

pmol/L pg/mL

1 pmol/L = 1.36 pg/mL

pmol/L	pmol/L = pg/mL × 0.7378	pg/mL = pmol/L × 1.355

Vitamin B12 (CSF) is reported in pg/mL or pmol/L. The page converts between the units only.

pmol/L × 1.355 = pg/mL (exact factor 1.355).
CSF values are only meaningful together with a blood sample taken at the same time; no established reference range is listed here.

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Source: PubChem: Cyanocobalamin · Last reviewed: 2026-10-19

Note from the source: No established reference range; the page converts units only. Mass-to-amount conversion uses a molar mass of 1355.4 g/mol.