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Pathology and Laboratory Medicine
Test Catalogue

​Thrombin Time (TT)


Specimen Requirements​ ​

  • ​Whole blood
​Collection Procedure
​Required Volume
  • ​Optimal Volume: 2.7mL
  • Minimum Volume: 1 mL platelet poor citrated plasma
    (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.)
  • ​4 hours on cells
Grounds for Rejection​

Testing Information​ ​

  • ​24 hours a day, 7 days a week at RUH, SCH and SPH
  • STAT available at RUH, SCH and SPH
Testing Site​
  • ​RUH, SCH, SPH
Results Reporting​
  • ​STAT available within one hour of receipt in the lab at RUH, SCH, and SPH
  • In hospital within 2 hours
  • Community urgents within 4 hours
  • Community routines within 24 hours
  • ​Optical based detection
​Specimen Retention
  • ​Specimens are stored for 24 hours
Alternate Test Names​
  • ​TT
SHR LIS Test Code​
  • TT8 (For Laboratory Use Only)


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

Laboratory Controlled Document LSM-349 v2

Last Modified: Friday, February 9, 2018 |
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