IMO, they should be required to call before making such a change, but the regulations allow them to make such changes without any patient input, so they do what they want. This is all part of the obsolete "patients don't know anything about medical issues, so they shouldn't be allowed to have any say-so in the matter" policy established and maintained by the medical community.
This also appears to be the basis of the FDA ruling in the
23andme case. The FDA claim is based on the position that the company has no right to make medical recommendations. But I have no doubt that the driving force behind this attitude is the position long held by the doctors of this country that they are entitled to a monopoly on patient health recommendations (essentially, that's the guarantee behind their license to practice, and it's why they originally campaigned so hard to persuade the legislature to adopt the licensing law — to eliminate unlicensed competition), and most importantly, "patients should have no rights that allow them to determine their own health care (independent of a doctor's care)". IOW, the medical profession doesn't like being cut out of the equation. That's their squawk against EnteroLab, but unfortunately, EnteroLab is run by a doctor, so they can't do anything about it.

This country's medical organizations have zero tolerance for labs that offer to deal direct with patients, thus cutting doctors out of zillions of dollars of extra profits.
I have a hunch that the bigger issue is that doctors are afraid that more and more people will realize that they don't always need doctors for all of their health needs, and that is bound to greatly trouble the American Medical Association. And even worse, they fear that many patients will eventually realize that much of the advice handed out by the medical profession is counterproductive for good health. So it's a battle for power, and above all, money (as always). And as always, even though the FDA has no authority over doctors, when push comes to shove, they virtually always come down on the side of the "industry", (ignoring the needs of consumers), so consumers are unlikely to come out the winner in this issue.
23andme will probably be forced to make concessions.

Sorry, I tend to get carried away sometimes.
Tex