That's fine to do that. However keep in mind that HCG can actually inhibit natural test by increasing test levels to the point of inhibiting your production of natural test. You need to take clomid and Nolvadex to prevent this from happening. There are lots of theories on how to use HCG. I like to shoot 3000 IU's every 4-5 days for the first 3 shots, then 1500 IU's for the next two. This works well for me.