Identify Diagnostics Cotinine / Nicotine Drug Test Dip – 200 ng/mL Results in minutes. Model # ID-COT-DIP. Available in packs of 5, 10, 15, 25, or 50 dips. Buy more and save more. IMPORTANT: For frequent heavy smokers, this test may present a preliminary POSITIVE result in excess of 21 DAYS after the last...