Thank goodness I found this site. This is great! I have been looking on here and really like the info. I am hoping someone out there can answer a question for me. I am going into surgery on Tuesday, the 15th, to have a hysterectomy. I smoke everyday, and have for a very good while. Has anyone on here had marijuana in their system and had surgery??? I need to find out if there is anyway that it can interfere with the anesthesia. I really dont want to ask my doctor this question. Should I quit now or will it make a difference? Please help!