Can I collect a DNA sample if my dam is pregnant or "on-heat"? Orivet Genetic Support May 12, 2021 01:39 Updated Yes you can. DNA is not affected by the dam being pregnant or "on heat". Related articles My animal may have had something to eat, will this impact the sample collection? My pups have been weaning off mum, what and how long should I wait before I carry out a swab collection? How long can I expect to wait for my results? At what age can I collect a swab sample from my animal? DNA Collection Instructions Comments 0 comments Please sign in to leave a comment.