Activated Partial Thromboplastin Time (aPTT)
This test is performed on a Sysmex fully automated coagulation system which utilizes optical detection technology.
The test is used to measure and evaluate how long it takes to form a clot in blood.
Specimen Collection and Preparation
Collect a blood sample in the following tube:
Light Blue 3.2% Sodium Citrate Tube – Tube must be filled to 90% of minimum/maximum etched fill line
If possible, centrifuge the specimen at 3000 rpm for 15 min, remove plasma and freeze.
Specimen Storage and Stability
Store whole blood at the following temperatures:
Room temperature: 24 hours
Refrigerated 2°C to 8°C: Unacceptable
Frozen: Separated plasma only.
Insufficient sample volume – Tube must be filled to with 90% of etched fill line
Sample not stored at proper temperature
Frozen whole blood
Severely lipemic specimens
Specimen labeled incorrectly or not labeled
Monday – Saturday
Result available within 24 hours of receipt in laboratory
NOTE: Specimens are refrigerated (2-8°) for 7 days before disposal
STAT results available within 2 hours of receipt in the laboratory
Vibra Health Laboratory
1307- A, Allen Dr
Troy, MI 48083