Exposure to tobacco smoke can be detected by measuring nicotine and its metabolites. Nicotine has a short half life and is not used as a marker for tobacco smoke exposure. Cotinine due to its longer half life has been used in research as a reliable marker for smoking status and smoking cessation studies. The Cotinine Direct ELISA Kit is designed for the detection Cotinine in serum and urine. It can also be adapted for other fluids. https://www.creative-diagnosti....cs.com/Cotinine-EIA-
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