ARUP's Laboratory Test Directory

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

Mnemonic: TT

Methodology: Clotting
Performed: Mon-Sat
Reported: 1-2 days
Specimen Required: 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. Hemolyzed or non-frozen specimens.

Stability (collection to initiation of testing): Ambient: 2 hours; Refrigerated: 4 hours; Frozen: 2 weeks
Reference Interval:
 
 
Test Number Components Reference Interval
 Thrombin Time 14.7-19.5 seconds
 Thrombin Time 1:1 Mix 14.7-19.5 seconds

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
Cross References: Thrombin Clotting Time (TCT), Thrombin Time , Plasma