Thought this might be interesting for both the girls and boys, new device that allows home testing for testosterone, vitamin D, the flu virus, luteinizing hormone and C-reactive protein.

http://spectrum.ieee.org/tech-talk/biomedical/devices/new-gadget-lets-consumers-do-at-home-lab-tests

https://cue.me/#inflammation

QuoteThe testosterone test requires saliva, the flu test needs a nasal swab, and the others require a drop of blood.

Reminds me of "at home dna tests" that market more to the fears of consumers than assisting with understanding the state of one's own health. There isn't any claims of accuracy either so they might at best be able to detect trends in levels and not a snapshot of total and free/unbound testosterone.