An infection can also be due to not cleaning with alcohol properly. Make sure to swab the bottle top well first and obviously never reuse a needle. Also, 1.5" is pretty deep IMO, I know many use them but 1" is max for me.

I think its absolutely the concentration of test. Ive been pinning test for 10 years and I dont even use Test E thats over 300 ml per mg concentration. Id buy some test e 200 mg and pin twice a week.

Let's say that your gear is fine and you are right about virgin muscle, I would, myself go to a lower concentration, test is cheap and the sources on this site can get you delivered in 3-days. Christmas is making things longer. Now, I see one big problem headed your way.. you are going to run out of pin points that are not swollen. PIP is normal, especially as you reach the 400mg/ml range and you are right, virgin muscle can be a trouble. You will find that next pin can a) be not so bad, b) be horrible. If you try pinning through already aggravated muscle, it can be crippling. Here is my best advice... find a really great Sust 250 or maybe 300, that will be fine for a first cycle and you can pin that once a week. Second choice, look for a 200-250mg/ml enanthate or cypionate out there and stick with the twice weekly, it is indeed smoother. As a note... swollen and red can be common, don't be too quick on the antibiotics. Since the doctor gave them to you, I am going to give him benefit of doubt that his head is on his shoulders and not tucked up his arse, but it might have been a jump. The needle sizes are great, it would seem you have a good muscle mass to put a 1" into the delts... could drop that to 3/4", but I would a) get in new stock of lower concentration, test is cheap, b) warm your oils in hot water. Give your cycle a bit of time on new product and if you feel lucky, try the old gear again to see how it works, but personally, if my gear seems like shite, I just chuck it. Nothing like being crippled for a week on crap gear. See if the gear gives a listing of BA and BB (Benzyl Alcohol/Benzoate) and watch for that... could be you react to the solvent/disinfectant or even oil. Many people can handle grapeseed oil and not peanut..... etc... list is endless. I one of those lucky bastards that can pretty much tolerate anything and love it, you might not be. Hoping you sourced your gear here on EROIDS, you can post a pic of it to your pics on profile and then we will have a great idea what you are running. Get's to be a fine line of promotion/slamming, so put a pic of the gear on your profile, a few more stats on you, etc. and people can give you great advice. If you got the gear off of a buddy... well, put that shite down the bin.... nobody fucks you like your buddies. Good luck, Mate and keep up posting. Old heads will be on with some great advice, but nothing will beat this one.... if you just don't get on with it, let the money go and throw it out... get new gear in from a reputable source and just start over. Stay away from 'free' gear until you know what your body handles and stay safe. Your post sounds like you do a good job at this, so best wishes.