Partial Thromboplastin Time
CATEGORY: LAB      MNEMONIC: PTT
LAB: WMC
DEPT: Core Lab
DAYS SET: Daily
TAT: 2 hrs
CPT: 85730

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SYNONYMS:
     APTT   /   Partial Thromboplastin (APTT)

PREFERRED SPECIMEN:
     4.5 ml Blue(NA Citrate)

MINIMUM SPECIMEN:
     1.8 ml Blue(Na Citrate)

SPECIAL INSTRUCTIONS:
     Tube must be filled to line. Do not use for heparin nonograms. Order Heparin Anti-Xa UFH to monitor heparin.

REFERENCE RANGE:
     Hematology Reference Ranges