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Activated Clotting Time, ACT
MessagePerformed by LAB
Test Code
ACT
Alias/See Also
ACT, ACTLR, ACT+, Activated Clot Time
CPT Codes
85347
Preferred Specimen
Citrate Whole Blood: BLUE (BLU)
Minimum Volume
Full tube, follow blue tube collection instructions
Other Acceptable Specimens
none
Instructions
DO NOT SPIN, Whole blood collected in 3.2% buffered sodium citrate (9:1 blood to sodium citrate).
Specimen Stability
Blue Vacutainer tubes sent to lab for testing-test within 6 hours of collection.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Reject hemolyzed, clotted, short draw (<90%), overfilled, or centrifuged samples.
Methodology
ACT Medtronic
Setup Schedule
24x7
Reference Range
Reference Range: 80-140 seconds,
Results >400 are reported as >400 seconds
Results <60 are reported as <60 seconds
Results >400 are reported as >400 seconds
Results <60 are reported as <60 seconds
Clinical Significance
The ACT is a screening test that has been found to be sensitive to deficiencies of coagulation factors. It is useful as a routine pre-surgical screen test and for monitoring heparin therapy. The ACT is commonly used for heparin anticoagulation monitoring during cardiopulmonary bypass (CPB) surgery, percutaneous transluminal coronary angioplasty (PTCA), interventional radiology, extracorporeal membrane oxygenation (ECMO), hemofiltration, hemodialysis and critical care.
Performing Laboratory
CRMC Laboratory
FHSH Laboratory
CCMC Laboratory
