How do I work out the right amount to draw up when a vial says 5mg?

Posted by fasted_scientist in Beginner Questions - 1 points, 0 comments.

I’ve got a vial of something labelled 5mg and I’m trying to figure out how much to pull into an insulin syringe after I mix it with bacteriostatic water. If I add 1ml of water, does that mean the concentration is 5mg/ml? 05ml which is 5 units on a 100unit syringe?

I’m not sure if I’m doing the maths right or if I should be using a different volume of water to make the dosing easier. 1ml for 250mcg. Is there a standard way beginners usually do this to avoid mistakes?

Also, once it’s mixed, how long can I keep it in the fridge before it starts to degrade? I’d appreciate any simple tips or a quick walkthrough of the steps you take when you first get a vial. Ngl I’m a bit nervous about getting the dose wrong.

Community discussion - research and educational context only. Not medical advice.