Talk:Mastery Rank/@comment-112.198.90.221-20130416101258/@comment-8231897-20130418174737

Yes and I can confirm this from personal experience.

By the time I got my test 5 completed, I had more than enough mastery exp to do my test 6. Still had to wait another 24 hours after actually completing test 5 though.

It's max 1 attempt per 24 hours, doesn't matter if you fail or succeed.