Do test codes distributed through the Customer Center expire? ImPACT baseline test codes expire in 90 days. ImPACT post-injury test codes expire in 7 days. Distribute test codes in the Customer Center. Updated on 04/21/2020 Was this article helpful? Yes No Related Articles 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? If I administer a post-injury test with ImPACT Version 4, can I compare it to a test taker’s baseline from an older version of ImPACT?