Out of curiosity, did they have a minimum age for accuracy? One of the labs I looked into did and that made me hesitant to use them. Lol.
I wound up sending a blood sample to HealthGene (I’m in Ontario) for my little cuckoo silkie. I also didn’t want to get super attached and then be stuck with a cockerel I didn’t want to keep.

This particular lab accepts blood, feathers, or even egg shells as long as the membrane is still in it. I went with the blood because it was easier to cut a nail on a few week old silkie than try to get feathers out of it. They charge $15/test.
And it was a pullet! Yay! Haha.

here she is, because she’s fabulous. Lol.
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