Phenobarbital, Plasma - Saskatoon
Discipline
Biochemistry
Overview
Description
Ordering Recommendation
- Not to be confused with Pentobarbital
- For trough level tests, collect specimen immediately prior to the next dose
Alias
- Phenobarb
Specimen Information
Specimen types accepted
- Plasma
Specimen collection container
- Preferred Collection Container: Dark Green (Lithium Heparin)
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Alternative Collection Container: Red
Required volume
- Optimal Volume: 4.5 mL Full collection tube
- Minimum Volume: 1.0 mL
(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection) - Capillary Volume: 400 uL
- Pediatric Volume
Transport and stability
- 7 days at 2 – 8 ºC
Rejection criteria
- Specimens received where the proper collection protocols were not followed
- Pathology and Laboratory Medicine Acceptance and Rejection Criteria
Testing Information
Relevant clinical history
Relevant Recent Medication History
- Note on requisition the dosage, date and time when medication was given
Performance
Methodology
- Kinetic Assay
Days/times performed
Availability |
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Maximum laboratory time
Results Reporting
- In Hospital reported within 2 hours
- Community urgent and inter-hospital reported within 4 hours
- Community routine reported within 24 hours
- Critical results > 225.1 umol/L will be phoned
Specimen retention time
- 3 days
Last Updated: October 9, 2024