Hey there! There currently would not be a way to filter those test groups from the campaign response. You could send a one off test email to your test group before actually completing a review & send in which you’re sending to your regular audience groups. This way you’re able to see how the campaign looks prior to sending out to your regular groups. This then displays as a test there on your response page and is segregated from those campaigns in which you distribute via the review & send.
Hopefully this helps clarify, but please let me know if you have any questions.