Authentic tests for various STDs are fine and to be encouraged, but somewhere I read about one performer forging his or her test in front of another performer´s eyes.
It might have been in context of people like Shelley Lubben or someone else having dropped out of the industry, which makes it suspicious of overly taking sides.

Very vague indeed; although, if someone, for any reason, wants to perform and has an STD, a fake test can potentially be the means to earn a considerable amount of money.

Welcome to capitalism.