The presence of nicotine in blood can be a sign that the individual smokes. There are some blood tests that measure cotinine, a chemical produced from nicotine in the body, instead of nicotine. Chloroquine philippines Can you take zantac with plaquenil Lithium and plaquenil In the USA, drug testing for new employees, and during employment is pretty routine, in fact it's more unusual not to face some sort of drug testing. That has seen a rise in people wondering how to cheat a nicotine test, due to nicotine testing now becoming more frequent as why is nicotine testing becoming more frequent, and when could you face a nicotine drug test? He swears he has given up and blames the positive test result on chewing nicotine gum. I really need to find out if it does affect the test, or if he is just trying to cover up that he still smokes. It is extremely important that he does not smoke as he has had a collapsed lung. Hi, As with all diagnostic tests, there will be false positives, i.e. tests that are positive while in reality they are negative. I suggest you have another test for nicotine. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Anders Mark Christensen, General. Reasons for false nicotine positives There can be a number of reasons why an individual can test positive for a nicotine blood test. Some blood tests measure the level of nicotine or cotinine in the blood while some other tests give a positive or negative report according to some predetermined levels for these chemicals in blood. Can plaquenil cause a positive nicotine urine test Plaquenil effect urine - Answers on HealthTap, What causes urine test to be positive for nicotine. Plaquenil for ra reviewsChloroquin andgranuloma annulareChloroquine dose rheumatoid arthritis Indulging in a rare cigar or being around people who smoke is most likely not going to result in a positive cotinine result. A positive cotinine test is usually the result of someone who smokes, chews tobacco or wears a nicotine patch. There will always be myths about smoking, but a laboratory test can see through the smoke and get the real. Debunking the myths the facts about cotinine - ExamOne. What causes urine test to be positive for nicotine? - Doctor.. False positive for cotinine" Smoking Cessation Community.. By definition, all positive results on GC-MS are true positives. Reports of false-positive urine drug screening for substances of abuse are infrequent and limited to case reports and a few controlled-exposure studies. The TABLE lists some of the substances reported to cause false-positive results. Cotinine urine test, nicotine urine test This test measures the amount of cotinine in your urine. Cotinine is a chemical your body makes after you are exposed to nicotine. You may have this test to measure your progress in a program to quit smoking. This test measures the amount of cotinine in your urine. Cotinine is a chemical your body makes after you are exposed to nicotine. Measuring cotinine is better than measuring nicotine because nicotine disappears from your system within a few hours, but cotinine remains for a day or more. You may.