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...there's more than one test /scoring level/definition (as far as I'm aware)
The tests are not something that I'm particularity well read up on. Soz.

It seems to be often said to be either over 140 or over 165 depending on who is saying it

https://sciencetrends.com/what-is-the-genius-iq-level/

Yup, that was my take on it... for the one I took I'm 'pretty sure'(it's a long time ago now) that it was 145 for the 'genius' level....