Should I send a multiple cheek swabs or just one?

Our lab can usually process several test kit results from one swab, but since some people's genes are harder to process than others we will eventually run out of extracted DNA. 

For this reason we usually suggest that customers register every swab in our app and mail us DNA swabs for the kits that they purchase.

There is no additional cost and it will ensure that we have a large collection of DNA to extract and genotype from.