YEP! ..it's basic knowledge in the medical field but not alot of peep's realize it outside of that. Evertime you snap an amp you not only run the risk of small glass shards falling in but tiny glass particles automatically fall in just about everytime. Using a filter needle to draw eliminates any possibility of drawing them into the syringe. It's an ABSOLUTE MUST/PROTOCOL when making IV prep's but is accepted as standard practice anytime amps are used. Plus the filter needles are about the same price. One of those better safe then sorry. I would say most guys who get sore, red, swollen, or absesses while using amps, this is the REASON!... i'm 99% positive!