I hadn't ever thought about it before, just trusted their claims of being 95% accurate (without looking into that claim) and used them for previous 3 babies. All 3 came back as boys and were indeed boys!
So I decided to use it again this pregnancy. The result is a 4th boy! We were thrilled, chose a name etc.
Then came out Dating Scan at 12wks +3 days. Of course couldn't resist asking for a clear Nub shot and sending that to "The Nub Experts" who came back saying "early girl prediction".
Now I know nub theory isn't that accurate prior 13wks but researching into Sneak Peek it seems neither are their home testing kits 🤦♀️
Should have just waited for the 16 week scan right? 😂
Attached is my scan pic for reference.