7. Special Coag Studies
- Polybrene added to plasma for PT and PTT with no shortening of clotting times. Interpretation: no evidence of heparin contamination
- Mixing study (1:1 v/v) performed using normal control plasma
Mixing Study Principles
Mixing Study Results
Interpretation : factor deficiency affecting both the PT and PTT
- What is your differential diagnosis at this point?
- What additional laboratory studies do you want?
- Do you need the results before treatment is begun? What treatment?