Should I stop taking my testosterone prior to cardiac surgery?

Ask your surgeon! What to do prior to surgery is always best asked of your surgeon. Be sure to also ask about post-op recovery (time) & complications. Off the cuff, t doesn't interfere w/bleeding & clotting although it does compete w/other drugs for protein binding sites. If anything, maintaining proper level of t should help in recovery. If you stop t abruptly, watch out for acute depression & suicidal thoughts.