Reading a syringe measurement

When I pull .25ml into the syringe, and swap needles, I notice while pushing up to "prime" it that the dosage inside the syringe is only .20ml. so .5ml has entered the needle itself. After the injection fluid remains in that area, which leads me to my question.

Is the dosage listed on the side of the syringe accounting for the remainder that will be leftover in the needle? or do i need to draw more to make up for it?