I am not LATS but I have been using SUBQ for many years now....daily injections using a tuberculin syringe - no more than .2 ml/cc per shot.
7 days a week -hit belly upper thigh upper glute etc.
I use gear made with GSO and pull with a large gauge needle then switch back to a 26 G 5/8 fresh needle and inject slowly.
this vid is a good demonstration of SUBQ injections:
Dr. John Crisler, SubQ Injection Demonstration - YouTube
I have gotten blood work several times on subq ...1,200-1400 ng/dl were the ranges on 140 mg a week....and feel 110% better than I ever did on 300 mg TRT 150 mg 2 x a week.