Acylcarnitine, Quantitative, Blood (Referred Out)- Saskatoon
Discipline
Biochemistry
Overview
Description
- Draw specimen just prior to a scheduled meal or feeding (approximately 3-4 hour fast, not a strict fast)
Test ordering requirements
Forms required
- Requisitions must have specific test indicated
- Miscellaneous Specimen Requisition Form #101878 or SHR Laboratory Medicine Community Laboratory Requisition Form #101064 or Acute Care Phlebotomy Requisition Form #10162
Specimen Information
Specimen types accepted
- Plasma or serum
Specimen collection container
- Preferred collection container: Dark Green (Lithium Heparin) 4 mL
- Alternative collection containers:
Required volume
- Optimal volume: 4 mL whole blood
- Minimum/pediatric volume: 0.5 mL whole blood
(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.)
Transport and stability
- Stable at room temperature for 8 days; refrigerated for 2 months; frozen for 3 months
- Store plasma/serum frozen
- Ship plasma/serum frozen to referral laboratory
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
- Family history
- Must include diagnosis and/or patient symptoms, and diet information on the requisition
Relevant recent medication history
- A recent medication list relevant for clinical interpretation of results
Performance
Methodology
- Flow Injection Analysis-Tandem Mass Spectrometry (FIA-MS/MS)
Days/times performed
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Maximum laboratory time
- 5 day turnaround time by referral laboratory
Other information
- Useful for diagnosis and evaluating treatment during follow-up of patients with fatty acid oxidation disorders and several organic acidurias
Last Updated: September 27, 2024