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Thrombin Time with Reflex to Thrombin Time 1:1 Mix
0030260
Ordering Recommendation

•Assist in diagnosing dysfibrinogenemia or abnormalities with fibrin polymerization.
•Screen samples for the presence of heparin or direct thrombin inhibitors.

Mnemonic
TT
Methodology
Electromagnetic Mechanical Clot Detection
Performed
Sun-Sat
Reported
1-2 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.  
Specimen Preparation
Transfer 2 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Serum. EDTA plasma, clotted or hemolyzed specimens.  
Remarks
 
Stability
Ambient: 2 hours; Refrigerated: Unacceptable; Frozen: 2 weeks  
Reference Interval

Test Number
Components
Reference Interval
 Thrombin Time14.7-19.5 seconds
 Thrombin Time, 1:1 Mix14.7-19.5 seconds

Interpretive Data


Note
If Thrombin Time is elevated, then Thrombin Time 1:1 mix will be added. Additional charges apply.
CPT Code(s)
85670; if reflexed, add 85670
Components
Component Test Code*Component Chart NameLOINC
0030270Thrombin Time3243-3
0030275Thrombin Time, 1:1 Mix33525-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Thrombin Clotting Time (TCT)
  • Thrombin Time
  • Thrombin Time, Plasma
  • TT