IMO, if you already have had yourself tested by DY, you may as well check out the compatibility of the two parties’ numbers BEFORE they meet. I will admit that my daughter and son-in-law did not it that way,they checked after a couple of dates, and B”H were “compatible,” but they took a huge risk, as they were already invested emotionally with each other, and it would have been devastating to them to be told, “not compatible,” at that point.
DY, btw, does not check for certain conditions that are genetic but not life-threatening, and which could still have devastating ramifications on the couple, should their children inherit the gene from them.