Hello, Yes I Just Had A Blood Test Done For

Hello, Yes I just had a blood test done for no nicotine for 30 and did not pass, I was using Chantix twice a day. My question is using Chantix, does that put nicotine in your system, so is that why I didn't pass? I am waiting to have back surgery and my time is limited from my ins. co. before the year is up. Thank You