Redness and pain inches away from injection site

[mesophyte]

First and foremost, get a pen/marker and outline the redness..Keep a keen eye on this, this way you'll be able to monitor if the site in fact spreads..It wouldn't hurt to have some benadryl on hand.If you get feverish, I'd suggest contacting your physician..

Ok, I'll do that now.

Other than that.. What size pin did you use?

22G 1 1/4"

This could be a case of "extravasation"..Where the compound leaked sub'q on/in/or around fatty tissue, and between your skin..

In addition to the issue I mentioned about my arm, this probably happened today in my glute. It was my first time doing a glute injection and the needle ended up coming up a bit during the shot. I pushed it back in once I noticed but some of the test probably went outside the muscle. Does extravasation resolve itself? Anything I can do to help? (massage, ice/heat pack?)

A variation to this is hypersensitivity,a local flare up if you will..An irritant on the localize tissue or even nerves as the oils disperses..It's temporary..

Your situation is basically classified as a "Irritant injection".. If it worsens,you start to see massive swelling,discharge/leaking, then your along the "Vesicants, also known as chemical cellulitus".. You'll know if this is the case..

Just keep a close eye on it, and watch out for fever and such, and most definitely utilize the pen/marker suggestion like I stressed prior..

Ok, thanks!