API is committed to maintaining our high level of customer service, while preserving the health and safety of our employees during the COVID-19 crisis. API is currently limiting on-site staffing and consequently, we are reducing our phone hours. Emails and our Live Chat feature will continue to be serviced as usual during regular business hours, and we encourage you to use these ways to contact us. In addition, the Knowledge Base section of our website provides answers to many frequently asked questions.

Thank you for your patience and understanding while we navigate these difficult times.

API DataDirect

API DataDirect is available to all participants enrolled in American Proficiency Institute clinical proficiency testing programs.Laboratories can use their LIS or middleware to transmit their proficiency testing results directly to the American Proficiency Institute, a process that revolutionizes external quality control measures for clinical laboratories.

This process will improve laboratory quality by eliminating clerical errors and will make the PT process much like patient testing. DataDirect will save laboratories significant time and money.



  • Apr 6
    Immunology Replacement Deadline
  • Apr 15
    Immunology PT Results Deadline
  • Apr 16
    Hematology Evaluations Graded
  • Apr 20
    Chemistry-Misc. Shipment
  • Apr 27
    Chemistry-Misc. Replacement Deadline
  • May 1
    Immunology Evaluations Graded