Do they really give you a nicotine test?
My surgeon will not operate on a smoker. And he did say he tested for nicotine. I assume that was part of the pre-op blood drawn. I quit smoking a month before the orientation seminar, 7 mos. before my surgery. Thank God I did. I suffered a collapsed lung the day after my surgery, and I can't imagine how much worse it might have been if I was still a smoker.
There is only 2 types of Nicotine test URINR & Hair Follicle, of the 2 the urine is the most used, issue is the test is not accurate due to a variety of foods that contain natural Nicotine EXAMPLE: sweet potatoes, Tomatoes
you can do a google search for foods containing nicotine and you will be surprised, also the urine test has to be sent to a special lab and I understand the test can take weeks to perform, but they would not be able to cancel your surgery since even though a non smoker your diet may contain nicotine.
I wish you well

It depends on the surgeon-WLS program. Mine said he did test for nicotine, and in fact, I was bumped forward in the surgery que because the patient before me had failed. (She was prepped, had the IV and everything. They tested her that morning when she came.) Surgeon told her the surgery was off, to get dressed and go home, he wouldn't be operating on her until she was nic free for 6 weeks. Thankfully I quit back in 1996, my surgeon said he even had some people (if their spouse smoked) sleep in a hotel the day before to not get any second hand smoke and fail the test. Each surgeon is different, but if yours says they test, take them at their word. Good luck.
Warmly,
Ducky