Other than the obvious, what's the difference between two vials of something where one has almost twice as much in it? For example, what's the difference between 100 mg per ml of tren ace versus 300 mg per ML? Is there more PIP, a faster or slower rate of absorption?
The difference is potency and thus the amount of oil that needs to be injected . Alot of the fast ester products are 100mg/ml and over a week you may be pushing quite a bit of oil . The increased concentration of hormone can result in more pip . Sometimes more ba , bb is needed to make that concentration hold in solution . And yes it can also effect absorbtion . When the pharma companies who developed these drugs back in the 50's and 60's did the research and developed them they tried to come up with the best balance of all the factors . The main difference you would notice is sometimes the more concetrated oils have more pip .