am 51 yrs. old and my Dr. has me on 150 mg. test cyp. every two weeks. I do my own injections and have been reading that injections every week are better. So I split my shots and am doing 75 mg. every week. My question is when would I have my levels tested if I am injecting every week? When I was doing it every two weeks my Dr. had me do it after the first week. I know that test cyp. has a half life of 7 - 10 days and when I had my levels tested one week after my 150 mg. injection my levels were 573.