I'm 23. I had my test levels checked due to lack of performance ...came back with a 402. Normal Range is 250-1100. 1100 being something like a teenager and 250 being an 80 year old guy. So Im guessing im low. Was informed by someone that had similar problem, after doing a correct cycle of test with correct pct..The body maintained a higher level of test on its own after the cycle was all said and done. Looking for some more info if you have had same situation..Thanks