I finished up a vial of Test E from a reliable source that took my testosterone from the low 300's to >1500 (as high as the test measures) in 4 weeks. I opened a vial of Test E from a different source and got tons of acne on my chin and back. Does this mean it is a stronger Test E, different in some fashion, or a different compound altogether? BTW, I'm on 250mg a week. Keep in mind that the original vial is not bunk since I had blood work done and gains to match.