What is the difference between oraldrug screening or urin screening?

Answer 1

They check your urine for drugs that they would not find in your mouth because the drug has already dissipated. Drugs that you took six weeks ago could remain in your blood stream.They do the oral screening for recent drug use. Sometimes people have ways of getting clean urine. So the best way is sometimes to do the oral where you can stand there with the person.

Answer 2

Drug "tests" can be divided into two general groups. The first group is the kind most people are familiar with. This type of testing involves the donor giving a sample of some bodily fluid or hair to an employer, doctor, law enforcement official, or a died testing center. This is normally a sample of urine, blood, hair, or saliva/oral fluid. After collection from the donor, the sample is sealed with a tamper-evident seal and sent to a laboratory for analysis. The disadvantages are typically costs associated with the need for collection sites (urine, blood), and the delay in receiving results (up to 4 days.)dthe availability of results within minutes. Furthermore, if on-site screens, such as oral died or saliva tests are used, the problem of "beating the tests" (otherwise known as sample adulteration or substitution) can be virtually eliminated. On-site screens provide qualitative results, and when supplemented with laboratory-based confirmation tests, can be defended in a court of law.

This article will focus primarily on the first type of test, but will refer to the latter when appropriate.

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Each of the oral fluid device can test for six drugs in the human oral fluid. We offer a number of oral drug tests to test different drugs, as shown in table 3-1. The oral drug tests can perform qualitative detection of drug metabolites in saliva.

Each of the urine drug tests can test for a single drug/ a combination of drugs. We offer a number of test cards to test different drugs, as shown below. These drug test card can perform qualitative detection of drug metabolites in urine.
The Laboratory Urine Drug Screen is a laboratory-based testing for :
Amphetamines, Barbiturates, Benzodiazepines, Cannabinoids(THC; Marijuana), Cocaine, Methadone, Opiates, PCP

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The excerpts above are from the sources below:

Answer 3

Different drugs detected by different chemistry tests...barbiturates versus weed, etc.