2 ml vial is what i got as well. basically you draw 1.75 ml BA water and inject it in the hCG vial, mix in a circular motion very gently DO NOT SHAKE, you can't have bubbles! to draw 250 iu with an insulin syringe simply draw to 12.5 mark, thats 250iu! it may seem so little but trust me it will go a long ways!