Phenobarbital

General Information

Lab Name
Phenobarbital
Lab Code
RPHNO
Components

Interpretation

Reference Range
Units: mcg/mL
Female Male
AgeRange AgeRange
0-10.0-40.0 0-10.0-40.0

Effective date: 07/07/2015

Ref. Range Notes
At steady-state, which is achieved approximately 2 weeks after therapy is initiated, blood levels of phenobarbital that correlate with optimal response to the drug range:
Infants and children: 15.0-30.0 mcg/mL
Adults: 20.0-40.0 mcg/mL
Critical value:  > or =60.0 mcg/mL

Ordering & Collection

Specimen Type

Processing

Receiving Instructions
Misc Sendout

Performance

Lab Department
Sendouts Mayo Lab (RF)(MARF)
Frequency
Available STAT?
Performing Location(s)

Billing & Coding

LOINC
3978-4
Interfaced Result Code
UOW2319