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PARTIAL THROMBOPLASTIN HEPARIN

Message
PTT: TUBE MUST BE FULL, DO NOT DRAW FROM HEPARIN LOCK.


Test Code
PTTH


Preferred Specimen
LIGHT BLUE


Minimum Volume
Tube must be full


Other Acceptable Specimens
None


Specimen Stability

4 hours




Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
3+ hemolysis, ultracentrifuge grossly lipemic specimen, clotted specimens


Clinical Significance
Heparin, in the presence of an adequate level of Antithrombin III, will result in a prolonged APTT.  This test is used in the management of patients on heparin therapy.




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.