Test Name: Pentobarbital
Health Link Test Code: HCPENT
LIS Test Code: PENT
CPT Code(s): 80345
Methodology: Gas Chromatography
Days Performed: Daily, dayshift- Pathology Resident approval is required after hours.
In-Lab Turnaround Time: 1 day.
Stat In-Lab Turnaround Time: 3 hours.
Collection Container: Red top
Collection Volume: 3 mL
Pediatric Collection Volume: 1 mL
Sample Analyzed: Serum
Testing Volume: 1 mL
Pediatric Testing Volume: 0.4 mL
Centrifuge. Transfer cell-free serum to plastic vial. Refrigerate.
Transport specimen to laboratory. Transport with coolant pack if coming from clinic location.
Specimens collected in red cap with yellow ring (SST) tubes are not acceptable.
Generally effective therapeutic concentration when used in treatment of increased intracranial pressure:
18 years and up: 2.5 - 4.0 mg/dL
All results greater than 3.0 mg/dL are considered critical and will be called to the ordering source.
Interpretation Type: Interpretive Guidelines
Critical Calls: yes
Result of "BELOW DETECTION" indicates that the result is below the method detection limit of 0.2 mg/dL. The half-life is 15-48 hours. Peak serum concentration is usually reached 0.5-2 hours after a single oral dose.
This test was developed and its performance characteristics determined by the UWHC Clinical Laboratories. This test meets the standards for clinical testing. This test should not be regarded as investigational or for research use. The US Food and Drug Administration (FDA) has not approved or cleared this test; however, the FDA has determined that such clearance or approval is not necessary.