What happens to tests I had in inventory prior to ImPACT Version 4? All tests you have in inventory remain valid. Updated on 02/09/2021 Was this article helpful? Yes No Related Articles How do I add my ImPACT Passport ID to the app? What is the Two-Factor Score? What are the differences between ImPACT and ImPACT Version 4? Is ImPACT Version 4 available in languages other than English? How do I know whether I should use the Two-Factor Score or the 4 composite scores when interpretating the ImPACT Clinical Report data? How do I find the ImPACT test version?