Assertion: suspension's effect | /r/CapableOf | occur with serum total concentrations
Facets:
value: more often
type: DEGREE
Source sentences:
text: Therapeutic effect without clinical signs of toxicity occurs more often with serum total concentrations between 10 and 20 mcg/mL (unbound phenytoin concentrations of 1 to 2 mcg/mL), although some mild cases of tonic-clonic (grand mal) epilepsy may be controlled with lower serum levels of phenytoin.