Black is BigD, green is a certified standard. Peaks with (is) are internal standards. Primary solvent BigD is benzyl benzoate; standard is benzyl alcohol. Testosterone enanthate detected in BigD (estimated concentration 5 mg/mL). No extraneous peaks detected. Sample is clear of fatty acid esters.

This is an overlay of BigD Sustanon over a certified standard. It should be evident that they are nearly identical. I have been doing mass spec work for more than 20 years. I do know what I'm doing. I am completely confident that BigD Sustanon 250 is legit and is comparable to the "pharmaceuticals".