Hey all, I've been on test-cyp 500mg /wk for 1 week now and I had to get blood tests done due to an unrelated matter and the results came back that I had an underactive thyroid. This was the first time my thyroid/tsh levels have been tested and I've been doing reading and found out that anabolic steroids can cause this condition? Is it possible that being 1 week into my cycle could cause havoc on my thyroid or have I been like this all along? any Suggestions or opinions?