APTT
| Acronym | Definition |
|---|---|
| APTT | Activated Partial Thromboplastin Time |
| APTT | Advanced Practical Thinking Training, Inc. |
| APTT | Association of Part Time Tutors (Wallsend, Tyne and Wear, England, UK) |
| APTT | Automated Partial Thromboplastin Time |
| APTT | Accident Prevention Task Team |
| APTT | Adaptive Pursuit Tracking Test |