Thrombin Time
Label Mnemonic: TT
Epic Lab Code: LAB324
Downtime Form: A-1a General Laboratory Requisition
Hemostasis/Thrombosis
6240 RCP
356-3573
Specimen(s):
Collection Medium:
Light Blue top tube 1.8 mL (Na Citrate)
Minimum:
Full draw; 1.8 mL light blue top (mix well). Tube must be at least 90% full.
Rejection Criteria:
Short drawn tube, clot, traumatic tap (excessive hemolysis).
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
3 hours (upon receipt in laboratory)
Reference Range:
15-21 seconds
Comments:
Deliver to laboratory promptly.
Methodology:
Optical clot detection.
CPT Code:
85670