Nicotine (Cotinine), Urine

Nicotine (Cotinine), Urine

What it is

The Nicotine (Cotinine), Urine test detects the presence of cotinine, a primary metabolite of nicotine, in urine. Cotinine remains in the body longer than nicotine, making it a reliable marker for both active tobacco use and exposure to secondhand smoke. This test is widely used to evaluate smoking status, monitor smoking cessation programs, and assess nicotine exposure for medical or employment purposes.

Uses

This test is used to:

• Confirm active smoking or use of nicotine products.
• Detect secondhand smoke exposure.
• Support smoking cessation programs by monitoring progress.
• Comply with workplace, insurance, or medical program requirements.

Symptoms That May Lead to the Test

Doctors may order this test if there is suspicion of tobacco use, especially in patients with chronic cough, shortness of breath, cardiovascular disease, or other health conditions aggravated by smoking. It is also commonly requested for individuals enrolling in smoking cessation programs or when proof of non-smoking status is required.

Abnormal Results

Positive Cotinine in Urine: Indicates nicotine exposure, either through active smoking, use of nicotine products (patches, gum, vaping), or significant secondhand smoke exposure.

Negative Cotinine in Urine: Suggests no recent nicotine exposure. Cotinine can typically be detected in urine for up to 3–4 days after nicotine use in occasional users and up to 1–2 weeks in heavy or chronic users.

Risks

The test is non-invasive and only requires urine collection. There are no direct health risks. Accuracy depends on proper sample handling and timing in relation to nicotine exposure.