IGF-1 receptor and media grade

[steropower]

How do you know what grade is your IGF-1?

Also is there any significant difference in price or results?

[Pinnacle]

IGF-1 as in LR3 which is useless for building muscle tissue? If so, it doesn't matter what type LR3 you inject, you aren't growing one iota.
LR3 is a great GDA, and can aid when dieting on carbohydrates, but that is it.

[steropower]

Does it worth to try it for patellar tendinopathy or is it useless for this too?

I was thinking of injecting into the tendon.I have injected many substances in there without results..

[Pinnacle]

Patrick Arnold seems to think it would help