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Lupus Anticoagulant

Test Code
LAB478


CPT Codes
85613, 85670, 85705, 85732

Includes
PTT-LA and dRVVT with Reflex Confirmations If PTT-LA is >40 seconds, Hexagonal Phase Confirmation will be performed at an additional charge (CPT code(s): 85598). If Hexagonal Phase Confirmation is positive or weakly positive, Thrombin Clotting Time will be performed at an additional charge (CPT code(s): 85670. If dRVVT is >45 seconds, dRVVT Confirmation will be performed at an additional charge (CPT code(s): 85597). If dRVVT Confirmation is positive, dRVVT 1:1 Mixing Study will be performed at an additional charge (CPT code(s): 85613).


Preferred Specimen
Blue Sodium Citrate


Minimum Volume

1 mL (x2)



Transport Temperature
Frozen


Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 90 days


Methodology
Photo-Optical Clot Detection



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.