PSA, please boost! If you take testosterone as a shot, one thing you need to watch out for is the vial "crystalizing". I was warned about this, but had no idea what it looked like until my vial was quite advanced. I've attached photos so others know what the crystals look like. The crystals will dissolve if you gently warm it up by putting it in your pocket for 5-10 minutes. If they don't, it's time to get a new vial.
These photos are licensed Creative Commons Zero (public domain). Feel free to reuse however you like, no attribution required.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!