Thrombin-Antithrombin (TAT) Complex

Test Code

31104

CPT Codes
83520<br /> *** RESTRICTED USE *** This code is available for Client #58705 ONLY.

Preferred Specimen

1 mL plasma collected in a 3.2% sodium citrate (light blue-top) tube

Minimum Volume

0.5 mL

Instructions

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/mcl). Freeze immediately and ship on dry ice. Note on requisition if patient is on oral anticoagulant therapy.

Transport Temperature

Frozen

Specimen Stability

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

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Thawed Plasma

Methodology
Enzyme Linked Immunosorbent Immunoassay

Setup Schedule

A.M. Sets up 1 day a week.

Report Available

Reports in 3 to 10 days.

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.

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.