Test Catalog


Search below or browse by department on the left hand menu for testing offered at Providence Health Care laboratories.

Testing not found here may be available via our send out program. Please refer to our send out test directory (requires PHC intranet access). Pre-approval by a laboratory physician is required for many send out tests for both inpatients and outpatients.

For questions or comments about this catalog please contact Dr. Janet Simons at janet.simons@providencehealth.bc.ca

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Test Name: Anti Xa Activity

Test Code: HEPQ

Male Reference Interval

Age Category       Reference Interval       units
≥0 y 0.35-0.70 U/mL

Female Reference Interval

Age Category       Reference Interval       units
≥0 y 0.35-0.70 U/mL

Turn around time: Analyzed within 1 day of receipt when received Monday to Friday.

Collection Container: Light Blue

Sample Type: Citrated Plasma

Minimum Volume: Full Draw

Testcode and Ordering Information: Requisition must include type of heparin given and time of last dose.

Collection and Shipping Requirements: Centrifuge within 2 hours of collection. Minimum 1.0 mL double spun plasma. Freeze. Send frozen on dry ice. Must arrive at SPH frozen. Thawed specimens will be rejected.

Method: Anti-Xa Chromogenic

Measurement uncertainty: 6%