Barbiturates (BAR): Nembutal (pentobarbital)
Barbiturates are another large class of drugs. They are used primarily for controlling epilepsy; some use for migraine relief (butalbital) and drug-induced comas for head trauma (pentobarbital). Examples of Barbiturates include phenobarbital, pentobarbital (used for head trauma) and butalbital (Fiorinal). Most barbiturate positive drug tests are due to prescription use; barbiturates are rarely diverted for illegal consumption. Some countries have heroin cut with phenobarbital.
Drug Class
Depressant/Sedative/Hypnotic
Trade Names
Alurate (aprobarbital), Amytal (amobarbital), Butisol (butabarbital), Nembutal (pentobarbital), Seconal (secobarbital), Luminal (phenobarbital)
Street Names
Downers, goofballs, barbs, reds, bute, stoppers, yellow jackets, black beauties, M&M's, nembies, rainbows.
Effects Of Use
Exhilaration, sedation, lethargy, stupor, disorientation, respiratory depression, coma.
Approximate Detection Time
Urine: 3 days (phenobarbitol  up to 2 weeks)

Oral Fluid: NA
Urine Cutoff Levels
Immunoassay (screening): 300 ng/mL

GC/MS (confirmation): 200 ng/mL. Labs are limited by the number of barbiturates they identify on their GC/MS analyses
Primary Antigen
Secobarbital
Common Cross-Reactants
Possibly Phenytoin which is chemically-related to barbiturates and used for epilepsy.


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