[bellaire]

Virtually all studies (and there have been many) have shown that people with diabetes who use glucose meters regularly are at markedly reduced risk of complications than those who do not.

WRT the OP, unless you are advocating that the FDA should allow home genetics testing provided it is held to high standards, your analogy does not hold. As stated, it seems that you are implying that people would be better off without home glucose meters. a proposition that is demonstrably false.