This test is useful to evaluate a prolonged APTT. Deficiency of Factor XI is most common among those with Ashkenazi Jewish heritage.

  • Test Type:
  • Pre-test Information:
    Overnight fasting is preferred. Give brief clinical history. It is recommended that patient discontinues Heparin for 1 day and Oral Anticoagulants for 7 days prior to sampling as these drugs may affect test results. Discontinuation should be with prior consent from the treating Physician.
  • Report Delivery:
    Sample by Thu 9 am; Report Next day
  • Components:

Sample Report