A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Antithrombin III, Activity

Test Code
LAB311


CPT Codes
85300

Preferred Specimen
Blue sodium citrate


Minimum Volume
0.5 mL


Instructions
Please submit a separate, frozen vial for each special coagulation assay ordered. Platelet poor plasma: Centrifuge light blue-top tube 15 minutes at approx. 1500 x g 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.


Transport Temperature
Frozen


Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days


Methodology
Chromogenic Substrate



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.