Phenobarbitone

Department

Core Biochemistry

Delphic Registration Code

PHBA

Synonyms

phenobarbital
Primidone

Turnaround Time

3 hours

Test Code

4757

Specimen Type

• Serum
• Plasma

Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin - Non-gel (Green Cap)

Acceptable

• Serum (Red Cap)
• SST II (Gold Cap)
• Lithium Heparin - Gel (Green Cap)

Preferred Sample Volume (ml)

4.5

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin - Non-gel (Green Cap)

Preferred Sample Volume (ml)

0.6

Additional Specimen Information

Specimen Collection Protocols - Specimens should be collected immediately pre-dose

Paediatric Specimen: 600 uL Lithium Heparin Microtainer

Aliquot Instructions

Sample Type

• Serum
• Plasma

Minimum Volume (ml)

0.07

Transport to Lab

Ambient (8 - 24 degrees Celsius)
If overnight - Chilled (2 - 8 degrees Celsius)

Interpretation

The standard half-life of phenobarbital is 4 days, with time to steady-state of 3 weeks.

Reference Intervals

65 – 130 umol/L

Test Method

Homogeneous enzyme immunoassay performed on Beckman Coulter AU5822 analysers using Beckman Coulter reagents

Non-Funded Test Cost

$35.66 (Exclusive of GST)

Billing Code

4757

Contact Information

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