Clinical Inquiries

How do we evaluate a marginally low B12 level?

EVIDENCE-BASED ANSWER: The best way to evaluate a low-normal B12 level is to check serum methylmalonic acid and homocysteine levels1 (strength of...

Clinical Inquiries

When should you order a Lyme titer?

EVIDENCE-BASED ANSWER: Lyme titers should be ordered for patients with signs or symptoms of disseminated Lyme disease, but who do not have the...

Clinical Inquiries

Is screening for lead poisoning justified?

EVIDENCE-BASED ANSWER: Evidence is insufficient to recommend for or against universal screening of young children for lead poisoning in high-...