Case 58 – update 4

Our patient has a confirmed left sided DVT. Prior to initiation of anticoagulation a clotting screen is performed. It shows:

  • PT 12s (11-14)
  • APTT 49s (35-40)
  • Fibrinogen 5.5g/L (1.5-4)
  • d-dimer 990ng/mL (<500)



  • How do you interpret the results?
  • What investigation would you next perform?


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