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<< Transient Ischemic Attack: An Evidence-Based Update (Stroke CME)

Diagnostic Studies

There are few laboratory tests that aid in the diagnosis of TIA, except for a fingerstick glucose to exclude hypoglycemia, which is a common stroke mimic. A complete blood count is reasonable to obtain and may uncover unusual prothrombotic conditions such as thrombocytosis or polycythemia vera.2 Serum electrolytes are generally considered routine, as many forms of metabolic disarray such as hypokalemic periodic paralysis and hyponatremic encephalopathy can also mimic cerebral ischemia.

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