Question Author
At face value, yes it does look that the employer may be worrying staff unduly. Yet, due to their abhorrence of "misappropriation" of company stock by employees and regular security checks, I have little doubt that they might go to such lengths to find the rotten apple in the barrel. After all, they only have to hand over the packaging with a blank cheque payable to the laboratory and leave them get on with it.
I'm just curious to know if a DNA profile sourced in this way can be compared to known DNA records.