ACTIVATED PARTIAL THROMBOPLASTIN TIME

Message
HEMATOLOGY/COAG WRJ


Test Code
APTT


Alias/See Also
PTT


Preferred Specimen
PLASMA


Minimum Volume
2.7mLs


Instructions
DRAW 1 NA CITRATE(LIGHT BLUE) TUBE, SEND TO THE LAB AT ROOM TEMPERTURE, SPECIMENS FROM HEPARINIZED LINE MUST BE  PURGED WITH 15 mL's of BLOOD.  TUBE MUST BE ADEQUATELY (AT LEAST 90%) FILLED, MIXED BY GENTLE INVERSION, NO HEMOLYSIS AND DELIVERED IMMEDIATELY TO LAB.  Test must be run within 4 hrs of collection.  
CBOC can not draw if sample receiving > 4 hrs.
 


Transport Container
ORIGINAL TUBE


Transport Temperature
ROOM TEMPERATURE
 


Specimen Stability
4HRS from collection


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
HEMOLYZED OR SHORT DRAW.  Sample > 4hrs after collection.


Performing Laboratory
WHITE RIVER JUNCTION VT VA HEMATOLOGY/COAG 802-295-9363 EXT: 5521, 5523



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.