Thankful for Platelets
In a patient with suspected vitamin B12 deficiency and a borderline B12 level of 200–300 pg/mL, measuring this serum marker can help confirm the diagnosis.
What is methylmalonic acid (MMA)?
This condition causes sudden-onset, recurrent episodes of vertigo lasting less than one minute, triggered by changes in head position. Imbalance, nausea, and vomiting may occur, but focal neurologic findings are absent.
What is benign paroxysmal positional vertigo (BPPV)?
In patients older than 50 years with subacute or chronic headaches, investigation should include neuroimaging with brain MRI and testing for giant cell arteritis by measuring these two inflammatory markers.
(must state both)
What are erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP)?