Hello, I recently had a semen analysis that had some abnormal results that lead the doctor to believe I would have difficulty impregnating my wife, however, I had smoked a small amount of marijuana about 36 hours before the test.  Could the results be different if I re-tested without marijuana use? And how long should I wait? Thank you for your help!
Good day, and thank you for being with Chat Doctor ! Cannabis had been shown recently to increase sperm production in laboratory experiments which disputed the old thinking that it negatively affects sperm production. I would suggest getting another semen analysis after 3 months to check if it is really abnormal. You need 2 samples at 3 months apart before you could accurately say that the semen analysis is abnormal. I hope I have answered your question satisfactorily, and please consider a 5-Star rating for my answer. Thank you very much.