Goals and conditions · Condition
Vitamin B12 deficiency
ICD-10-CM E53.8
Too little vitamin B12 for normal blood cell production and nerve function, with or without anemia.
Biomarkers
Start with the primary markers, then add the companions that change how the primary result reads. Each link cites its source.
Vitamin B12Primary marker
NICE treats total B12 below 180 ng/L (133 pmol/L) as confirmed deficiency.
Tests: Labcorp 9, Quest Diagnostics 10, with ranges on the biomarker page
Methylmalonic Acid, SerumCompanion marker
NICE suggests serum methylmalonic acid when total or active B12 is indeterminate.
Tests: Labcorp 3, Quest Diagnostics 5
Related
Sources
We list which biomarkers a named source connects to this condition; we do not diagnose it. Interpret your own results with a licensed clinician, or track them in Aumnivida.