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PHENOBARBITAL LEVEL
MessageCollect as a trough just prior to next dose.
Test Code
LAB30
CPT Codes
80184
Preferred Specimen
One 6 mL red top tube
Pediatric: One red top microtainer
Pediatric: One red top microtainer
Other Acceptable Specimens
Dark green top tube
Instructions
Specific dosage history. Time drawn must be written on label.
Sample must be centrifuged within two hours of collection. Serum/plasma must be removed from the red cells and put into aliquot tubes following centrifugation.
Sample must be centrifuged within two hours of collection. Serum/plasma must be removed from the red cells and put into aliquot tubes following centrifugation.
Transport Temperature
Refrigerated
Specimen Stability
Unstable, centrifuge within 2 hours after collection
Ambient: 7 days
Refrigerated: 6 months
Frozen: 6 months
Ambient: 7 days
Refrigerated: 6 months
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Samples drawn in tubes containing a separator gel will be rejected. The separator gel may cause falsely lower results.
Methodology
Immunoturbidimetric
Setup Schedule
Sunday-Saturday
Reference Range
Therapeutic level: 10 -40 ug/mL
Toxic level: ≥40.1 ug/mL
Toxic level: ≥40.1 ug/mL
Performing Laboratory
West Virginia University Hospital, Inc.
Berkeley Medical Center
Reynolds Memorial Hospital
United Hospital Center
