Testosterone suspension is typically made with 6% BA, 10% BB and the rest EO. That's why the PIP is so bad for many people.
Thankfully I don't get bad PIP. I made some injectable epistane that was 50mg/ml with just 4% BA. It needed to be heated prior to injection and my shoulders took it better than jenna jameson
no need for that much BA. you can get away with the typical 2%/20% BA/BB and a 30/30/30 mix of oil/gui/EO with 100mg/ml.
if a lab has a micronizer thing (what's used with micro winstrol, if you recall when that first came out in what 98?99?), you can use 2% ba 10%bb and 20 eo/80 oil.... or use PEG. I'm not a fan of injecting peg.
anything over 2% ba is wayyyyy too much and will cause discomfot and swelling/redness.. generally speaking. labs cut corners on the BB content in favor for BA.
test 'suspension' should be just that... a water-based suspension.
test in anything but water would be just TNE.. test no-ester or test base. anyting water-based tends to carry a greater risk of infection and pain. I've never done anything water-based (inj or oral), so I dont' have experience or first hand knowledge of what the ratios or solvents used are typically.