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Pathology and Laboratory Medicine
Test Catalogue

​Free Protein S

Hematology - Special Coagulation


​Ordering Recommendation

  • ​​Part of Thrombophilia Investigation testing
  • Patient should not be on any anticoagulant
  • If unable to discontinue anticoagulant therapy, suggest consultation with hematopathologist prior to ordering

Specimen Requirements​ ​

Type​
  • ​Whole blood
​Container
​Collection Procedure
​Required Volume
​Stability/Storage
  • ​Whole blood specimen shall be received at RUH Coagulation Laboratory within 2 hours of collection
  • Specimen is discarded after reporting
  • If an extra specimen is collected it is retained for 3 months
Grounds for Rejection​
  • ​Line draws
  • Hemolyzed
  • Clotted
  • Inappropriately filled tubes
  • Patient on anticoagulant therapy testing must be approved by the Hematopathologist on service
  • Frozen aliquot specimen shipped without dry ice
  • Plasma specimen that has thawed and been refrozen
  • Plasma specimen that has thawed for more than 2 hours
  • Pathology and Laboratory Medicine Acceptance and Rejection Criteria   

Testing Information​ ​

Availability​
  • ​Monday to Friday 1730 - 1600 excluding statutory holidays unless approved by the hematopathologist on call
Testing Site​
  • ​RUH Special Coagulation Laboratory
Results Reporting​
  • ​Specimens are batched and performed once per week
Alternate Test Names​
  • ​Thrombophilia
SHR LIS Test Code​
  • THROM (For Laboratory Use Only)

Test Ordering Requirements​ ​

​Forms Required


​If you choose to print this information, it is valid only on date of print.

Laboratory Controlled Document LSM-282 v2

Last Modified: Thursday, December 14, 2017 |
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