For low dose/TRT guys subcutaneous injections can be superior. Daily or EOD with less volume is VERY effective. Not cutting into muscle and building up scar tissue for the rest of your life for one. Often total test is about 10% higher this way and the frequent shots provide free test far more often... you can get more out of less... 4 years into it and love it, no plans to go back to IM. No longer need an AI as another benefit when test is true TRT level... total around 1200 ... meaning a test dose UNDER 250mg for most... depends on several factors like SHBG, etc.
Easy to pin 20-30mg daily with a 27g or so and 1/2" pin... best area is usually glute or hip fat.
For the "it says on the bottle" argument, well they have not done enough studies to recommend otherwise but also think the carriers and etc generally used in pharma test are ancient as well. Not enough money in it to develop new carriers and change things.