How long can benzodiazopines be detected in blood test?

Benzodiazepines are a class of drugs that are commonly prescribed to treat anxiety, insomnia, and seizures. They work by slowing down the activity of the central nervous system. Benzodiazepines can be detected in blood tests for up to several weeks after they have been taken.

The exact amount of time that benzodiazepines can be detected in blood tests will vary depending on the specific drug, the dose that was taken, and the individual's metabolism. In general, benzodiazepines with a shorter half-life, such as lorazepam and alprazolam, will be detectable in blood tests for a shorter period of time than benzodiazepines with a longer half-life, such as diazepam and chlordiazepoxide.

For example, lorazepam has a half-life of about 12 hours, and it can be detected in blood tests for up to 2-3 days after it has been taken. Diazepam has a half-life of about 20-40 hours, and it can be detected in blood tests for up to 5-10 days after it has been taken.

It is important to note that benzodiazepines can also be detected in urine tests for a longer period of time than in blood tests. For example, lorazepam can be detected in urine tests for up to 10 days after it has been taken, and diazepam can be detected in urine tests for up to 21 days after it has been taken.

If you are concerned about the possibility of benzodiazepines being detected in your blood or urine, it is important to talk to your doctor.