Changing Needles.

[V6A6L6O]

Hey guys,
Just wondering, say if i drew some test out of its vial and i wanted to mix it with deca, would i need to change the needle to draw from the deca vial? I was just worried about weather some of the test left on the syringe would settle in the deca vial?
Cheers guys.

[Ernst]

Nope.