aspirating with synthelamin

[rodeo]

hi,could anybody tell me when aspirating with synthelamin, how do you know if you have hit a blood vessel or anything,because the liquid is red,i have just started and do it subq in stomach.any help please.

 

[Arcus]

Regardless of the liquid being red, when you pull the plunger back, if the synthelamin remains at 1ml (assuming that is what you are shooting) you will know no blood is entering the syringe, because blood would for sure fill up the syringe past the mark of Synthelamin that it would be obvious. I always shot mine in the quads, found that the easiest.