We use a device which is virtually painless. Participants in clinical studies have reported lower levels of pain with the Tasso device compared to collecting blood with a finger stick or standard venipuncture procedure.
You can also view a general how to video of it here: https://vimeo.com/759587605
If you are interested in the Oral TRT protocol, here is a video on how to use the at-home blood testing kit: https://www.youtube.com/watch?v=QsUR8mpb-hg