Can a drug test tell the difference between percocet and vicodin?
January 9, 2010 - 6:19 pm
My friend is taking percocet for his back.He ran out of percocet and bought some vicodin from one of our friends.He took a vicodin before his appointment (and all day before) and they tested him.The test came back that he had NO percocet in his system.Do they really have a test to determine you have specifically percocet in his body??If they do…seems very expensive.I just thought they test for the general ones like:opiate,cocaine,thc,etc.
January 9th, 2010 at 6:32 pm
Percocet and Vicodin would both test a simple positive in the opiate category on a drug test.
January 9th, 2010 at 7:00 pm
The confirmation test (usually GC/MS, or LC/MS/MS) can tell the difference between chemically similar drugs.
General
LABs test 1) Initial Test (IMMUNOASSAY)
2)Confirmation test
Some labs do
3)Adulteration test (for cheating agents- bleach,Creatinine,Nitrite,etc )
Also
The National Institute of Drug Abuse (NIDA) requires that companies test for five specific categories of drugs.
(NIDA5)
· Cocaine – Includes Cocaine, Crack and Benzoylecognine
· Cannabinoids – Includes Marijuana and Hash
· Amphetamines – Includes Speed, Methamphetamines and amphetamines
· Opiates – Includes Heroin, Opium, Codeine and Morphine
· Phencyclidine – PCP
Depending on what profession you are in or what business or governmental department you are required to take a drug test for, there may be expansion tests required. These test for additional drugs such as:
· Barbiturates
· Hydrocodone
· Mehqualone
· Benzodiazepines
· Methadone
· Propoxyphene
· Ethanol
· MDMA or Ecstasy
Drugs that can be tested for, but are not commonly tested for include:
· LSD
· Tryptamines
· Phenethylamines
· Inhalants