About this item

• OVER 99% ACCURACY: More than 99% accurate in detecting according to the designated cut-off levels. | STABLE MARKER: Cotinine is more stable determining nicotine use minimum detection 1-8 hours and max 1-7 days for teens or adults; same test used by many life insurance companies | EASY QUICK RESULT: Simply Dip for 10 seconds and read at 5 minutes. 2 lines (control and test) present is negative; just a control line present is a positive. Note: Even a faint test line is negative if the control line is present. | 510(K) Cleared and CLIA Waived for OTC use; sensitive 200 ng/ml cutoff. Positive Results & the Detection Window (1) Cotinine may stay in the system longer for heavy and regular smokers who have a slower metabolic rate or whose kidney does not clean the nicotine out at a steady rate. (2) Smoke replacement therapy like Nicotine Gum, Nicotine Patch, and Nasal Spray that contain nicotine as well can elongate the positive detection time | SATISFACTORY EXPERIENCE: Feel free to reach out to us with any questions. Refund or returns are acceptable by brand owner,who is dedicated to be the best home use tests provider.