Researchers have discovered that blood levels of epilepsy drugs in nursing home patients can fluctuate wildly for no apparent reason.  This article and video interview from Medpage Today.

Serum concentrations of carbamazepine within individual patients varied from one measurement to the next by as much as 260%, and valproate levels showed swings of up to 460%, according Ilo Leppik, MD, of the University of Minnesota.

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