Vitamin B12

MeasuredEssential

A vitamin needed for nerves and red blood cell production.

Deficiency is common on vegetarian diets and can cause nerve damage that does not fully reverse.

How we rate it — Essential

Defensible in a routine adult check-up.

This rating and the description above were written against published screening guidelines by someone who is not a clinician, and are awaiting review by one. We would rather say that than imply an authority we do not have.

Check-ups that include it

In 48 of the 78check-ups we track — 62%. Cheapest first.

and 36 more.

Also sold as

Every one of these names refers to this same test. Resolving them to one canonical entry is what makes an honest comparison possible.

b12 · cyanocobalamin · vit b12 · vitamin b 12 · vitamin b12 · vitamin b12 cyanocobalamin

Information here is for comparing packages, not for diagnosing yourself. Talk to a doctor about which tests you actually need.