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HelpOrder Code PTTM PTT Mixing Study
Additional Codes
Epic Order ID LAB2827
Collection tube (preferred)
Blue
Stability
4 hours at 2-8°C
Rejection Criteria
Grossly hemolyzed, grossly lipemic, improper blood to citrate ratio, or clotted specimens
Notes
If sending frozen aliquot, do not allow to thaw in transit.
Clinical Significance
Test is ordered if PTT was abnormal and patient is not on anticoagulation therapy medications.