Photo by digitale.de on Unsplash.
I’ve read and seen in various forums the suggestion a person should give their Ancestry DNA sample (saliva) first thing after waking up. The reasoning is that a maximum number of cells, formally part of the tissue inside the mouth, should be suspended in the saliva. This made sense to me until I met a person who followed this approach twice and had her sample rejected twice.
Upon inquiry with Ancestry, we learned this ‘first thing after waking’ approach can present too much bacteria in the saliva. Yes, that makes sense, too. Ancestry suggests eating a meal, waiting 30 minutes or so, and then giving the sample.





