Pathology

Test & Collection Guide

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Thrombin Clotting Time

Alternate names:

TCT

Laboratory:

Coagulation

Test Code:

Specimen types:

Plasma

Container types:

Sodium Citrate

Collection Instructions:

Transport specimen at Room Temperature to lab

Fill tube to label marker and mix by inversion.

Notes:

Used to detect heparin presence/contamination or abnormal fibrinogenFill tube to label marker and mix by inversion.

Frequency:

Daily

Result Turnaround Time:

2 hours

Reference Interval:

18 - 24 seconds

Laboratory Use Only

Storage Instructions:

Specimens for TCT assays kept at room temperature, should be centrifuged and tested within 4 hours of time of collection.

If testing is not complete within 4 hours, plasma should be removed from the cells (2 X 1 mL Eppendorf tubes) and frozen at -20 C for up to 2 weeks or -70 C for up to 6 months.

A frost-free freezer should not be used.