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APTEM-Viscoelastic Clot Assessment
Test CodeAPTEM
Alias/See Also
Rotem
CPT Codes
85396
Preferred Specimen
Citrate (BLU)
Instructions
Collect whole blood in 3.2% buffered sodium citrate (9:1 blood to sodium citrate). Venipuncture must be atraumatic.
Specimen Stability
Mix specimen well (minimum 10 times) and test within 4 hours of collection. Do Not Centrifuge
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Reject hemolyzed, clotted, overfilled, or short draw (<90%) samples. No samples for patients less than one year of age will be accepted.
Methodology
Rotem Delta Thromboelastometry
Setup Schedule
24x7
Report Available
Use ROTEM VIEWER to view test progress in real time.
Result values available as soon as testing is completed.
Full report and graphs available in EPIC MEDIA Tab.
Reference Range
| Test | Reference Range |
| CT | 37-78 s |
| CFT | 55-144 s |
| Alpha Angle | 67-80 deg |
| A10 | 46-67 mm |
| A20 | 51-73 mm |
| MCF | 53-74 mm |
Clinical Significance
The Aptem® assay is a semi-quantitative in vitro diagnostic assay on the Rotem® delta Thromboelastometry System to monitor the clot firmness of citrated whole blood specimens after blocking hyperfibrinolysis by aprotinin. The ap-tem® reagent is always used in conjunction with ex-tem® reagent.
Performing Laboratory
CRMC Laboratory
CCMC Laboratory
