Tested for Phenytoin in Blood
Normal range: 10.0 - 20.0 ug/mL
Day 1: 11.4 
Day 1: 11.9 
Day 3: 16.0 
Day 16: 8.8 
Day 19: 14.0 

Tested for Phenytoin in Blood
Trend is increasing
Abnormality: 
Low values on days 16
