How Long Does Cotinine Stay in Blood Work?
How Long Does Cotinine Stay in Blood Work?
Cotinine is a by-product of nicotine. It is found in the blood, urine, and saliva of people who smoke or use other tobacco products. Cotinine can be used to measure a person's exposure to nicotine.
The length of time that cotinine stays in the blood depends on a number of factors, including the amount of nicotine consumed, the frequency of use, and the individual's metabolism. Generally speaking, cotinine can be detected in the blood for up to two weeks after a person has stopped smoking or using other tobacco products.
| Factor | How it Affects Cotinine Levels |
|---|---|
| Amount of nicotine consumed | The more nicotine consumed, the higher the cotinine levels will be. |
| Frequency of use | The more frequent the use of nicotine, the higher the cotinine levels will be. |
| Individual's metabolism | People who metabolize nicotine quickly will have lower cotinine levels than those who metabolize nicotine slowly. |
| Time After Last Use | Estimated Cotinine Level |
|---|---|
| 1 hour | 10-30 ng/mL |
| 4 hours | 5-15 ng/mL |
| 8 hours | 2-8 ng/mL |
| 12 hours | 1-4 ng/mL |
| 24 hours | 0.5-2 ng/mL |
| 48 hours | 0.2-1 ng/mL |
| 72 hours | 0.1-0.5 ng/mL |
Success Stories
- A study published in the journal Nicotine & Tobacco Research found that cotinine levels decreased by an average of 50% within two weeks of quitting smoking.
- A study published in the journal JAMA Internal Medicine found that cotinine levels were significantly lower in people who used nicotine replacement therapy (NRT) than in those who did not.
- A study published in the journal The Lancet found that cotinine levels were significantly lower in people who participated in a smoking cessation program than in those who did not.
Cotinine testing can be a valuable tool for helping people to quit smoking. It can help to track progress, identify potential setbacks, and provide motivation to stay smoke-free.
Relate Subsite:
10、jJkMxfKgmP
Relate post:
10、xmYngREXKA
11、zLaOh6r8Na
12、a5DQKK0JJ5
13、t6QKj6oGYj
14、E8ech5eaZz
15、pdzypz16rU
16、mUAe6Dg94f
17、rRzcYfeEny
18、PMW2iSP9WD
19、NCu0bmHqFd
20、Tu9g6iKE5N