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aPTT
Test CodeLAB325 1230100232
Alias/See Also
PTT
APTT
ACTIVATED PROTHOMBIN TIME
APTT
ACTIVATED PROTHOMBIN TIME
CPT Codes
85730
Includes
ACTIVATED PARTIAL THROMBOPLASTIN TIME IN PPP BY COAGULATION ASSAY
Preferred Specimen
Plasma
Instructions
Fully collect a Blue Top (sodium citrate) tube. Underfilled tubes will not be accepted. Mix sample immediately by gentle inversion at least six times.
Transport Container
LT BLUE TOP-CITRATE
Transport Temperature
Refrigerated
Specimen Stability
If transport time will exceed four hrs, send platelet-poor plasma 2 to -20C or less.
To obtain platelet-poor plasma: centrifuge, separate plasma, recentrifuge, and separate plasma into a transport tube.
To obtain platelet-poor plasma: centrifuge, separate plasma, recentrifuge, and separate plasma into a transport tube.
Reference Range
Result Checking Type | Low (N) | High (N) | Numeric Range (N) |
Reference Range | 23.0 | 33.0 | 23.0-33.0 |
Abnormality - Critical | 82.0 | >=82.0 |
Performing Laboratory
MWH LAB SH LAB LH FSED MAIN LAB HC FSED Main Lab