Thrombin-Antithrombin (TAT) Complex (TATHR)

Test Code

Quest Code

Alias/See Also

CPT Codes

Preferred Specimen
1 mL frozen platelet-poor plasma collected in a 3.2% sodium citrate (light blue-top) tube

Minimum Volume
0.5 mL

Platelet poor plasma: Centrifuge light blue-top tube for 15 minutes at approximately 1500g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/┬ÁL). Freeze immediately and ship on dry ice.

Transport Container
Transport tube

Transport Temperature

Specimen Stability
Room temperature: 4 hours
Refrigerated: 4 hours
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature or refrigerated

Enzyme Linked Immunosorbent Assay (ELISA)

Setup Schedule
Wednesday, friday

Reference Range
<4 mcg/L

Clinical Significance
Thrombin-Antithrombin (TAT) Complex is a parameter of coagulation and fibrinolysis. The Thrombin-Antithrombin Complex keeps clotting in check. Deficiencies may aid in understanding hypercoagulable states. Elevated concentrations have been associated with vascular complications associated with diabetes.

Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.