I did a testosterone cycle about 5 months ago to see how my body would react on accutane problems, I took 500mg of testosterone for 10 weeks, I took blood and my testosterone hit more than 3000ng / dl on the exam being normal q I got about 600ng / dl , even with more than 3000 I did not feel much difference in libido and practically nothing, I only felt stronger, I also used oxandrolone (it is a DHT derivative) for 6 weeks 90mg along with testosterone at the time, it made me believe more even though it was a problem of receptors and response of the body, with more than 3000 of testosterone in the blood was for me to want sex even with an animal hahahaha