Findings

What do systematic reviews say?

1 questions · 1 findings · 1 reviews

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 100%Moderate 0 · 0%High 0 · 0%

Serum vitamin B12 levels Normal value: > 300 pg/mL (> 221 pmol/L)

1 finding from 1 review

Oral vitamin B₁₂ versus intramuscular vitamin B₁₂ for vitamin B₁₂ deficiency 2018 · Cochrane Headline outcomes only
no estimate extracted
3 studies · 153 participants
Low