Test Information:
Partial Thromboplastin Time mixing study is done to detect the cause of a prolonged PTT screening test. It is used to distinguish factor deficiencies from factor inhibitors, such as lupus anticoagulant, heparin, direct thrombin inhibitor or specific factor inhibitors.
Specimen Container:
Blue Top Tube (Sodium Citrate)
Specimen Type:
Plasma
Required Volume:
2 mL
Patient Preparation:
No Patient Preparation
Notes:
To obtain optimal results, it is recommended to separate plasma from whole blood within 15 minutes from the time of collection; aliquoted specimen must be transported within 4 hours from the time of collection.
- However, if delay in transportation occurs, it is vital to follow the stipulated storage and stability. Specimen received beyond the stipulated storage and stability is considered “sub-optimal” in nature.
Storage & Stability
(Before Processing)
- Storage: 15 to 25°C
Stability: 4 hours
Transport Temperature:
Room (18°C to 24°C)
Test Category:
Routine
Test Schedule:
Daily
Results Availability:
Within 4 hours