There’s always a risk when you transport items. Just decide if the worst case scenario is worth it. @SeeOhShow gave you reasonable advice, but remember anything can happen.

I have flown domestically with stuff in both carry-on luggage and checked luggage. I have a small pelican case that I throw everything in to. Vials of growth, bottle of bac water, slin pins, alcohol wipes, prefilled/capped barrels with all the gear I’ll be running entire duration of trip, and luer lock needles for all those barrels.

The only thing they have ever pulled my carry-on bag over for after it goes through screening is the package of diaper/wet wipes also in my bag for my child. They check it to make sure it’s not a hidden brick of coke. No bs.

They see so much medication run through there that it just blends in to that. Now if you start chucking 3-4 vials in there too then you might raise some attention. But a case full of insulin pins and other needles/medical supplies just looks like someone with a medical condition traveling to those TSA agents. Make it look packaged up all professional like it’s meant to be there.

This has been my experience. Dozens of domestic flights with gear.

We recommend, but do not require, that your medications be labeled to facilitate the security process.
TSA policy quote