I read a lot about how much Test to inject but I have never heard anyone give a number in terms of (ng/dl) necessary to build mass. Say I keep my lifting the same but want to gain more mass. What blood level (apx.) would I have to reach before growth happens due to the T? Right now my T-level is about 300 (obviously low). Would reaching 700 cause muscle growth? Do i need to shoot for 1,000+? I get regular blood tests done, so it's much more helpful for me to chart my objectives through (ng/dl) than by mg of injection. Thanks for input!