PTT/INR

Test Code
INRPT/APTT2


Preferred Specimen
3 mL Blue Top Tube 
MUST BE FILLED TO TOP LINE


Minimum Volume
2 mL Blue Top Tube
MUST BE FILLED TO BLACK ARROW


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted
If tube is not filled up to the line, or if tube is over filled. 


Performing Laboratory
UMC



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.