Thank you for your great question. Some studies have found the use of cannabis to increase the likelihood of infection post-operatively, as well as affect the immune system in general. Most surgeons instruct patients to cease the use of THC and other supplements as a precaution. In your specific case I would wait and see the results of the CBC. If you are prone to having low levels of hemo, I would suggest visiting your primary doctor and seeing where your levels are. If they are low, you can ask about intravenous treatments prior to beginning the process of being cleared for surgery. Some practices require patients to submit a urinalysis the day of surgery and will not operate patients who test positive for THC, while others will not exclude a patient based on cannabis use. Your best bet is to ask your surgeon's medical assistant directly.
