Do Not Do Recommendation

 
Tests for vitamin B12 deficiency should not be carried out unless a full blood count and mean cell volume show a macrocytosis.

Do Not Do Recommendation Details

Recommendation:
Tests for vitamin B12 deficiency should not be carried out unless a full blood count and mean cell volume show a macrocytosis.
Interventions:
vitamin B12 deficiency test

Source guidance details

Guidance:
Chronic fatigue syndrome/Myalgic encephalomyelitis (CG53)
Published date:
August 2007
Paragraph number:
1.2.2.5
Page number:
16

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