Partial Thromboplastin Time (PTT)
LABOKLIN Service ID: 598
- PTT is used to monitor coagulation factors of the intrinsic system and can be used as a global test to identify coagulopathies.
- An isolated prolongation of PTT without changes in the PT may indicate a factor deficiency (factor VIII, IX, XI and XII). Hemophilia A or B can be identified by determining the concentration of single factors (VIII, IX).
| Material | citrate plasma 1:10 (1 part citrate + 9 parts blood) 0.5 ml (cooled). |
| Method | chronometry |
| Duration | 1 day |