You would be the first to do this, and I think the idea is fantastic, but using multi-purpose 10-milliliter vials of testosterone or other derivatives isn't necessarily suitable for everyone.
Some protocols require the simultaneous administration of several molecules, and therefore multiple vials at once, at doses that aren't necessarily enormous. Sometimes, this is due to self-prescribed TRT, and the new trend of more frequent microinjections. For these reasons, the same vial is sometimes used for months. Over time, the oils become rancid, the benzyl alcohol can evaporate, and improper handling can render 10 milliliters unusable at once. With these smaller containers (between 2 and 10 ml), an increase in the price per milliliter would certainly be necessary due to higher manufacturing costs. The 1 ml ampoules would then become obsolete. This question may have already been raised. Other laboratories may have also already tested the concept. What are your thoughts? Thank you in advance.