Do I need to draw more when using a vial adapter? Luer lock?

[Kaliman911]

Hello guys, just changed to another pharmacy and got my T prescription which included a luer lock (vial adapter) so I decided to use it. However, I noticed I had less solution in the syringe when I installed the needle. So I have to draw a bit more when using the luer lock before installing the needle? I’m thinking yes, just want to confirm. Thanks.