You saw drconman's "Rosetta just received the patent for their heart failure test !!!" post, right? He provided a link to a published patent application. Contrary to what drconman told you, ROSG hasn't received the patent yet. They've just applied for it.
Look at the documents tab on the wipo link that drconman posted. "Invitation to Pay Additional Fees and, Where Applicable, Protest Fee (ISA/206)" This itself proves that the patent hasn't been granted. Do something as basic as reading the wikipedia article about patent applications, then cross-reference what you see there with the ROSG patent application page. The patent hasn't been granted. When the patent is granted, ROSG will definitely put out a PR. The market will respond accordingly.