Blood Gases Arterial Syringe, Blood - Saskatoon
Discipline
Biochemistry
Overview
Alias
- Oxygen
- pH
- pO2
Specimen Information
Specimen types accepted
- Whole Blood (arterial)
Specimen collection container
- Preferred Collection Container: Blood – syringe (calcium and electrolyte balanced)
Collection procedure
- Blood shall be collected from an artery
- Air bubbles shall be avoided or removed
- To avoid clotting sample contents in the syringe shall be mixed
- Send all samples to lab on ice
Required volume
- Optimal Volume: 1.0 mL
- Pediatric Volume: 0.5 mL
(In some situations, a minimum volume may require a second collection.)
Transport and stability
- 15 min post collection at room temperature
- 1 hour post collection on ice - Delayed analysis increases the risk that test results no longer represent patient status
Rejection criteria
- Samples with a volume less than 0.5 mL
- Samples received > 15 min at room temperature
- Samples that are received greater than 1 hour post collection on ice
- Specimens received where the proper collection protocols were not followed
- Pathology and Laboratory Medicine Acceptance and Rejection Criteria
Performance
Methodology
- Electrochemical (amperometric and potentiometric)
Days/times performed
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Maximum laboratory time
- Within 15 minutes of receipt in laboratory
Specimen retention time
- Specimens are discarded immediately after testing
Last Updated: October 3, 2024