Phenytoin, Total and Phenobarbital Group, Plasma

CPT CODE:

USEFUL FOR:

See individual test descriptions for:-  #8604 "Phenytoin, Total, Plasma" - #8252 "Phenobarbital, Plasma" 

SPECIMEN REQUIRED:

Draw blood in a lavender-top (EDTA) tube(s). Spin down and send 1 mL of EDTA plasma refrigerated.

TRANSPORT TEMPERATURE:

Refrig\Frozen OK\Ambient OK

CLINICAL INFORMATION:

See individual test descriptions for:-  # 8604 "Phenytoin, Total, Plasma"-  # 8252 "Phenobarbital, Plasma" 

CLINICAL INTERPRETATION:

See individual test descriptions for:-  #8604 "Phenytoin, Total, Plasma"-  #8252 "Phenobarbital, Plasma" 

REFERENCE VALUES:

PHENYTOIN, TOTAL

   Therapeutic concentration:  10-20 ug/mL

   Toxic concentration: > or =30 ug/mL

PHENOBARBITAL

   Therapeutic concentration

      Infants and children:  15-30 ug/mL

      Adults:  20-40 ug/mL

             Toxic concentration:  > or = 60 ug/mL