Ok...you guys can argue and reason it out all you want but it is confusing the matter. According to the Bluelights harm reductions threads regarding injections and heating your shot...they always say DO NOT DO IT. Alt 14, you keep saying you are not an expert and you don't have the experience but you still keep arguing the point of why it is ok or should be done. If we take that info and disregard it and read all the HR threads regarding This subject by the people who have the personal experience and some expertise on this subject (and all of the mods in this area) they all say the same thing and that is not to heat it. There is tons of background info and detailed reasoning on why it shouldn't be done. My intent is not to be inflammatory or piss you off byut why keep arguing this? Here are several more threads, by the mods and other with the expertise that explain why you should never heat a shot.
"NONE OF THESE SHOULD BE HEATED WHEN PREPARING FOR PARENTERAL INJECTION. Black Tar Heroin: Black Tar Heroin is prevalent on the West Coast of the United States HR note to all as the issue of applying heat to opiates has been a very hot topic (no pun intended) as of late. According to the experience of many, and the science that back's it up, under most circumstances in the USA you do not heat heroin. Especially not powder heroin, but not tar either. The reason you don't ever apply heat is, when you do apply heat tar, you introduce all the contaminates, cuts, and probably degrade the active ingredient a little bit while allowing all the precipitate matter to join the solution. YOU ARE SUPPOSED TO BE LEFT WITH VISIBLE "TAR" IN YOUR SPOON, ALL THE HEROIN HAS GONE INTO THE WATER. THE VISIBLE "TAR" IS INACTIVE INGREDIENT, LIKELY THE SUBSTANCE THAT YOUR HEROIN HAS BEEN CUT WITH. This is only difference between a hot shot and cold shot of heroin, hot shots DO NOT get you higher. Don't be fooled by what you see, your eyes cannot see milligrams, but all the heroin has all gone into the cold water. Man people's eyes play tricks on them when they heat the solution and no longer cannot see the particulate matter,, but it's is still there, but melted in with solution. When you run a solution that was heated/cooked and not allowed to completely cool down in time, when you run it through the filter, the adulterants/contaminates/inactive ingredients slip right through the filter and into your syringe. Even though it may look clear to you, it is almost as dangerous as IVing without a filter, since the filter couldn't effectively filter out the particulate matter from the cooked/hot solution of heroin/water/melted cut. Another common myth is that cooking your shots kills all bacteria eliminating risk of bacterial infection. This is false because bacteria thrive in wet, warm/hot environments, and if you actually applied enough heat to kill all bacteria, you would have degraded the active ingredient, heroin, significantly. So another reason to do cold shots: No added degradation of heroin. To minimize risk of bacterial infection, practice proper injection technique, absolutely EVERYTHING that comes in contact with the drug, your solution, your rigs, etc, must be sterile. When mashing the heroin with a plunger in cold water in your cooker or spoon, be EXTRA sure that you've sterilized the plunger, and have washed your hands with isopropyl alcohol, or even better use non-latex gloves. There are more germs on your fingers than most other parts of your body so it is VITAL that you maintain a sterile environment every step of the preparation and injection procedure."
Even if you let the solution cool and then run through a wheel filter some particles can re congeal after they are in your body..then you are basically screwed. Cotton filters are not going to filter it all out and do you seriously think this kid (and a lot of ohters)0 are utilizing wheel filters? I think not though maybe I'm wrong. The point is, there is no advantage to heating the shot at all, so by letting it cool or not, why take the chance? Again, there is no advantage regardless of what some people think so why do it?