Prior evidence can get you into Mensa

Mensa accept a range of test results, as long as they were administered correctly, are a test of cognitive abilities, and you score at or above the 98th percentile across the full range.

You can submit your evidence, along with the form found here https://mensa.org.nz/sites/default/files/Prior%20evidence.pdf 

For details on tests and scores that are acceptable for entry to Mensa, see: https://www.us.mensa.org/join/testscores/qualifying-test-scores/