You need Test your IGF1 levels at Week 2 and Week 4. If it's fake then you contact your source to make it right, otherwise find a new source.

If it's real but underdosed then you would adjust your dose accordingly.

The idea that chinese is half the potency or pharma is internet nonsense by parrots

If you don't know how to 100% confidently spot fake pharma gear then you should not be buying pharma gear.

Some UGLs offer credits and incentives for bloodwork on their products.

The best option is to find a reliable source. They are few and far between for HGH.