Vitamin B12 Deficiency Diagnosis - Medical Algorithm

Are you evaluating a patient for vitamin B12 deficiency?

Yes

Does the patient have ...

• fatigue and general weakness?

Yes

• glossitis?

Yes

• stomatitis?

Yes

• pallor?

Yes

• loss of appetite with weight loss?

Yes

• mild jaundice?

Yes

• loss of central vision?

Yes

• confusion?

Yes

• neurosis?

Yes

• delusions and/or hallucinations?

Yes

• memory loss?

Yes

• dementia?

Yes

• stupor?

Yes

• paresthesias in hands and feet?

Yes

• decreased vibration and position senses?

Yes

• decreased deep tendon reflexes?

Yes

• ataxia with unsteady gait?

Yes

• megaloblastic anemia, with elevated MCV?

Yes

• thrombocytopenia and/or neutropenia?

Yes

• elevated serum total bilirubin?

Yes

• elevated serum LDH?

Yes

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Specialty

Objective

ICD-10

Clinical Features of Vitamin B12 Deficiency

Purpose: To evaluate a patient for clinical and laboratory findings associated with vitamin B12 deficiency.