Do vial cap removers actually work?

Yeah, that's my approach as well. It needs a touch of care and repetition to get right, yet whatever tiny bit stays behind inside the container really doesn't count for much. Using a tool to pop the top off would be my absolute last choice. Plenty of others go that route, sure, but the chance of bits breaking off worries me, plus exposing everything to the surrounding atmosphere.

Yeah, I prefer employing a brief 29 gauge needle measuring 4 millimeters when drawing out the final portion from the container, eliminating any concern regarding the depth of insertion.

I used to draw out every last bit because I feared losing something. Even a visible droplet trapped in the bend near the rim amounts to one unit at most. I don't bother with amounts that small now.

This.

For whatever reason I always end up with my final injection from the container being slightly above or below what I take each week, and it's more often a bit extra. It feels better to go ahead and inject that instead of getting rid of it. I've become skilled at easing the needle out gradually while getting that remaining bit. Now that I consider it, this whole process at the finish of the container comes across as an odd habit. This habit stands out even more with the substance where the amount is minimal, making that leftover drop seem worth the effort.

When handling bigger milligram totals that need mixing in reduced milliliter volumes, which occurs regularly because of typical vial capacities, the leftover fluid gains more significance. I switched to a single extended needle for pulling out every drop since it made sense. Inverting the container left quite a bit of solution trapped near the wide stopper.

Big closure, what's the quantity clinging on the sides? I wouldn't describe it as significant. Moreover, when mixing up a vial in that range, I usually move everything over to another container to get a suitable strength and dose size. In the process the original one gets cleaned with the solution going into the new container. I still don't see why it's a concern. Five units remaining inside without rinsing would only be a small fraction at a mix of one hundred forty milligrams in three milliliters.

I did something similar in the past. When relying on insulin needles, I'd cut the metal cap with sturdy scissors, stick a small syringe needle inside, and extract the remaining contents. These days I have a different injector so that step isn't needed anymore. Instead I mix it up, withdraw the liquid, run it through a filter, and load it into my injection device.

The 1.5 inch is the ticket for that.