Blood Gases Venous Vacutainer, Blood - Saskatoon
Discipline
Biochemistry
Specimen Information
Specimen types accepted
- Whole Blood
Specimen collection container
- Preferred Collection Container: Blood- Dark green (Lithium Heparin)4 mL
Collection procedure
- Blood must be collected from a vein
- To avoid clotting sample contents in the vacutainer must be mixed
- Transport sample on ice to the laboratory immediately
Required volume
- Optimal Volume: 4 mL
- Minimum Volume: 1 mL
(In some situations, a minimum volume may require a second collection.)
Transport and stability
- 1 hour post collection - Delayed analysis increases the risk that test results no longer represent patient status
Rejection criteria
- Samples with a volume less than 1.0 mL
- Samples that are received greater than 1 hour post collection
- Specimens received where the proper collection protocols were not followed
- Pathology and Laboratory Medicine Acceptance and Rejection Criteria
Performance
Methodology
- Amperometric and potentiometric assays
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
Other information
- PO2 and whole blood ionized calcium are NOT part of this test
Last Updated: October 4, 2024