How many chances do I have after getting an invalid ImPACT Baseline Test? Test takers get one additional attempt after the first invalid ImPACT Baseline Test. Updated on 10/25/2018 Was this article helpful? Yes No Related Articles What are the system requirements to run ImPACT Baseline Test? Can ImPACT Baseline Test be taken on a Chromebook? Is there a time limit to complete ImPACT Baseline Test once the test starts? Is there an expiration date to my ImPACT Baseline Test unique testing link? What do I do if I get an invalid ImPACT Baseline Test twice? Why can’t I load/start ImPACT Baseline Test?