Dosing mg's w/mL syringe

[WyldeMan]

Got some Letro but not liking the pump feature. The only syringes I have or can even find are measured in mL's. I've searched and tried to find the answer but how am I supposed to measure .25mg based off of a 1mL reading? For instance, 50% of 1mL, 25% of 1mL, etc.?

Thanks

[johnmacdan]

mg is concentration while ml is the volume. Your solution will be a certain mg per ml. So 1 ml of it will be XX mg written as xx mg/ml. If it is 1mg/ml and you want to take .25mg then you will take a .25 of a ml. If you want .5mg than you will take .5ml. Determine what mg/ml your solution is and then you can divide to get .25mg. If it is AR-R , I believe it is 2.5mg/ml which means you will need .1ml for .25mg. Check my math though, it has been a long day.