It depends on your perspective.
In the medical community, anything that puts you over the high end of normal would be considered abuse.
As someone that uses AAS at well above HRT doses, my idea of abuse is quite different. As others touched on, it is dependent on your bloodwork. If your blood work shows you are good (and you don't have a clotting issue like some of our unfortunate members have had), I feel you are not abusing.
I feel that anything my body can recover from without any permanent damage is abuse. Unfortunately, as Phil and some others mentioned in posts a while back, bloodwork sometimes isn't enough to tell if you have a kidney issue or not. Scarring of the kidneys can happen without any other values being abnormal on your blood panel and urinalysis.
I personally made a set point for total gear use, and that was 6-700mg of total gear per week. I pulled the number out of my ass, although knowing the highest testing done on humans in medical studies was 600mg influenced my decision.
I just recently bumped my dose up to quite a bit higher than that, I am getting married in a tropical place next month and wanted to be as big and lean as I could for the big day, shallow, I know, lol. So right now I feel I am abusing myself, but just based on my agreement I made with myself, not health issues or anything like that. I am scheduled for blood work next week, so I'll be a better judge of whether or not I am abusing myself shortly.