Phenobarbital

Specimen Tube Type Transport

Gel Green Top

Container Whole Blood Required

4 ml whole blood in a Gel Green Top

Critical Value

>80 ug/mL

Summary Test Name

Phenobarbital

Specimen Preparation Outreach

Spin right away, separate plasma into plastic 12 x 75 pour-off tube. Cap with plastic stopper. Refrigerate until courier pickup..

Specimen Stability

1 week refrigerated, if spun and plasma removed from gel; 6 hours on the gel

Minimum Volume

1 full green microtainer or 1 mL in a pediatric green top tube.

Specimen Transport

Refrigerate

Specimen Preparation In House

Spin and refrigerate until analysis

Stat Availability

24 hours a day, seven days a week

Test Turnaround Time Routines And Stats

Routine 4 hours Stat 1 hour

Reference Value

Therapeutic range: 15-40 ug/mL

Additional Test Information

Trough: Collect immediately before administering the next dose.