If you are researching a product described as 100IU HGH, the headline strength should be only one part of the evaluation. More useful information can include:

Exact product identity
Stated strength and formulation
Batch or lot reference
Certificate of Analysis (CoA), where available
Analytical testing information
Manufacturer or laboratory documentation
Storage information
Intended research classification
A batch-specific Certificate of Analysis can help connect analytical results with a particular product batch. Where a CoA is available, its details should correspond with the exact material being reviewed.