What is barbiturates on a drug test?

Barbiturates are a class of drugs that depress the central nervous system, which means they can cause relaxation and drowsiness. They are often prescribed as sedatives or hypnotics, and can also be found illicitly. Barbiturates can be detected on a drug test, including urine, blood, hair, and saliva tests. The length of time they stay in the body can vary based on several factors, including dosage, frequency of use, and metabolism. Barbiturates can be dangerous when abused, and can lead to addiction, overdose, and other health problems.