Syringes are items in this game that can have many different effects, ranging from invisibility to sulfuric acid. You cannot tell what effect syringes have unless you have a specific trait or have already used the same type of syringe.

Now this is a simple one but can save your run. If you have an unknown syringe there are a couple different methods that work well for discovering what it is. The easiest way is to simply pay a scientist to analyze it for you, you will then be able to view what effect is has!

But if your saving your money you can simply test the syringe on a vent system. That will then spread the effects throughout the building and affect anyone who runs through the syringe clouds. This can be super useful if it turns out to be something like Poison or Sulfuric acid, but very disappointing if you end up wasting something like invincibility. You can also test them in lake that have a filter in the Parks, this is great for helpful syringes as you can use them multiple times by hopping in the water when the effects wear off. However, this means NPC’s can also jump into the pond and get the effect!

Another third option is if you want to test them on yourself, make sure to do it by a toilet! Any toilets in the game will allow you to purge your current status affects, which can be extremely useful. However, be careful, if you have an effect like resurrection it will also be removed!