78 year old patient recently on Dilantin (phenytoin) suspension had a seizure so a total Dilantin level was checked. (A free level probably would’ve been ideal in the case.) The level came back at around 4 which was unusual for this patient. Their normal...
98 y/o female had a long history of seizures was treated with Dilantin (phenytoin) 100 mg twice daily. The Dilantin level was routinely drawn every 6 months and had been in the 6-10 range for quite sometime (normal total level is 10-20, but there are multiple...