What are the screening cut-off levels?

The screening cut-off levels on our tests are consistent with those of SAMHSA. Amphetamines—————-1000 ng/ml Barbiturates———————300ng/ml Benzodiazepines—————300 ng/ml Cocaine————————-300 ng/ml Marijuana————————50 ng/ml Methadone———————300 ng/ml Methamphetamine———–1000 ng/ml Opiates————————2000 ng/ml Phencyclidine——————–25 ng/ml Tricyclic Antidepressants—-1000 ng/ml

How long do drugs stay in your system?

Urine Method Amphetamines — 2-6 days Barbiturates — 3-8 days Benzodiazepines — 2-14 days Cannabis (Marijuana) — 14-30 days Cocaine — 2-5 days Ecstasy — 1-3 days Methadone — 2-8 days Opiates — 2-5 days Phencyclidine — 3-8days Tricyclic Antidepressants — 10 days   Saliva Method Amphetamines — up to 72 hours Barbiturates — up […]

Are there any legal medications that can trigger positive results?

Yes. The most common problem is the pseudoephedrine in many over-the-counter sinus and cold medications, which can cause a positive result for methamphetamine. A GC/MS confirmation as well as a MRO review is necessary to determine the source of the positive result. Some forms of the drugs we test for may be available legally under […]