Posted Date
Effective Date
Test Name PTT (Activated Partial Thromboplastin Time)
Update Type Miscellaneous
CPT Code 85730
Order Code PTT

CRITICAL VALUE CUTOFF CHANGE

 

PTT (Activated Partial Thromboplastin Time)

Order Code:                  PTT

Fee Code:                     31106 (CPT 85730)

LOINC:                         14979-9

 

MLabs Coagulation Laboratory will be switching to a new lot of reagent for the Activated Partial Thromboplastin Time (aPTT) assay effective September 9, 2026. Reference ranges will remain unchanged, but the Critical Value cutoff will be updated as follows:

 

Critical Value: >or= 89.5 seconds

 

 

 

 

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