Had routine blood drawn for thyroid check and a few other things yesterday and almost immediately after I left the drs office, I noticed a large hard knot in the bend if my arm above the injection site. No bruising or pain per say, just a large knot. In all my years of routinely checking my thyroid and giving blood I can t recall having this happen. Is it anything to worry about?
Asked On : Sun, 5 Aug 2012