How far back should I pull when aspirating?

[occam]

Should I pull back a half inch or so, or will blood appear (if its going to) with just a little pull on it?

 

[RustyTromboneMan]

You dont need to pull back a whole lot, just enough so you could see what comes back into the syringe

 

[maxes21]

if u pull back and u see a bubble then your ok to shoot if u see blood find another spot.

 

[DaMan]

1/2 cc.

 

[neo1605]

1/2 cc.

??.............a bit too much bro.