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PT Mixing Studies

Test Code
MIXPT


Alias/See Also
PT Mix, PT Substitution


Preferred Specimen
1 mL Sodium citrate platelet poor plasma


Minimum Volume
1 mL


Other Acceptable Specimens
Sodium Citrate Whole blood delivered to lab within 30 minutes of collection.


Instructions
Do not allow thawing of specimen in transit if frozen aliquot is being sent.


Transport Container
Plasctic vial


Transport Temperature
Frozen


Specimen Stability
Ambient: 4 hours Refirgerated: 4 hours Frozen: 14 days


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


Setup Schedule
24/7


Report Available
Same day


Reference Range
See report


Clinical Significance
Test is ordered if PT was abnormal and patient is not on anticoagulation therapy medications.




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.