I remember MEDX very well. In early 2000, it went from ~$20 to $240 in then sharply down. I bought at ~$40 and sold at ~$170.
I remember their CEO and his wife. They both were running the company. It was outstandingly crooked team. Eventually, he was kicked out of the company and she left earlier to become a CEO of some European biotech with lots of promises and no delivery.