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PTT
Lab code: PTT
 
Test Synonyms:
Activated partial thromboplastin time; PTT
 
Lab:
Core Lab
Inpatient Req:
Core Lab (#84927)  
Outpatient Req:
Clinical Labs (#83608)  
Specimen:
5 ml Blue top. The specimen should be sent ON ICE for Outpatient specimens.
Result Time:
STAT: 1 hr   Cost: $
Reference Interval:
7 months-adult: 21.0-33.0 seconds.
Critical value defined. See MGH Critical Values for details.