So I am on my last few doses in a 10 ml vial. When I stick the drawing needle in I usually push it in most of the way (to the bottom of the vial). I then flip the vial upside down to draw the test out. Question is does the test come out the same regardless of how deep the needle is stuck in the vial? I always push some air with the syringe into the vial before drawing. Reason I'm asking is sometimes it's difficult to see the test in the syringe and just want to make sure I'm drawing enough into the syringe. Thanks.