Table 4. Laboratory data.

Variable	Value
Levetiracetam concentration (μg/mL)	8.7±6.3 (1.0–41.4)
Within therapeutic range	83 (55.0)
Below therapeutic range	60 (39.7)
Above therapeutic range	8 (5.3)
Blood urea nitrogen (mg/dL)	10.1±5.0 (1.2–48)
Creatinine (mg/dL)	0.3±0.1 (0.15–2.0)
AST (IU/L)	55.3±59.6 (12–3,267)
ALT (IU/L)	45.5±53.2 (5–1,759)
C-reactive protein* (mg/L)	7.3±7.6 (0.3–90.0)
Intracerebral hemorrhage	1 (6)
Brain malformation	4 (22)

Values are presented as mean±standard deviation (range) or number (%).

AST, aspirate transaminase; ALT, alanine transaminase.

^*Normal range of 0–8 mg/L.