Gamma Healthcare offers a wide array of drug testing options for Random, Pre-employment, Post Accident, Reasonable Suspicion, Return to Duty, Promotion or Follow Up reasons. We are a DOT approved collection site at the corporate location and all collections are performed using DOT standards. We also have a consortium program available.

We understand that sometimes you need drug and alcohol test results fast. For those circumstances, we offer instant screening solutions that provide nearly immediate results. Instant or rapid testing for drugs of abuse yield rapid, reliable results that can enable faster decision making and greater program efficiency.

Our variety of instant or rapid testing products offers convenient screening options for drug and alcohol use. These tests may be performed either at a Gamma Healthcare collection site or on-site at your location.

Rapid drug screen collection kits may be purchased for on site testing. Please contact for more information.


Laboratory Support
Instant tests that screen non-negative for illicit drugs should be confirmed in a laboratory.   The specimen should be sent to a SAMHSA-certified drug-testing laboratory, which will retest the rapid test specimen to determine if drugs are present. This additional layer of support and assurance can help to improve the quality and reliability of any testing program.

Our Poplar Bluff, MO location also offers DNA paternity collection services. Please contact  for more information or appointments.


Location Services:


Approved Collection Site for:

LAB CORP, Quest Diagnostics, Allere, Med Tox, CRL

Walk-in’s: Rapid, Dot, Non-Dot, Alcohol, Hair Follicle

GC/MS Confirmation of Rapid results available upon request.           

Chain of Custody







Tests for amphetamine (Adderal, Dexedrine, Benzedrine and illicit manufacture). Like methamphetamine, amphetamine is a metabolite of selegilinie and benzphetamine as well as a metabolite of methamphetamine. Thus, methamphetamine use will usually cause both a meth and amp positive. Some diet and cold medicines in larger doses can cause false positives. Detectable one to three days after last use.



Test for barbiturates such as pentobarbital, butalbital, amobarbital, secobarbital, and phenobarbital. These are CNS depressants that cause impaired motor coordination and mental disorder. Phenobarbital is used as an anitconvulsant. Other barbiturates are used as sedatives and analgesic-sedatives. They can be detected up to a week after last use except the longer-acting phenobarbital up to several weeks. Primidone metabolizes to Phenobarbital.



Test for benzopiazepine tranquilizer/antianxiety drugs including diazepam (Valium), chlordiazepoxide (Librium), oxazepam (Serax), alprazolam (Xanax) and others. The benzodiazepines are widely prescribed and primarily taken as pills orally. The can be detected for up to a week in urine.



Test for cocaine metabolite or benzoylecgonine. Cocaine metabolite will be present in the urine about 30 minutes after cocaine use and up to several days after infrequent, light use and up to a week or two weeks after chronic, heavy use. Cocaine is a stimulant that is snorted as a powder, smoked as “crack” or injected.



Test for marijuana. Use of marijuana is detected within 15 minutes after smoking and for one to three days after light use. Chronic, heavy use can be detected for several weeks or more after last use. Marinol, synthetic THC, will cause a positive. Sustiva and metabolites do NOT cause false positives.



Test for the natural opiates morphine and codeine and will also detect the synthetic narcotics hydrocodone (Vicodin, Hycodan, Panacet, Anexsia) and hydromorphone (Diluadid). Morphine is an injectable drug and a metabolite of heroin. Codeine is in some prescription cough syrups, Tylenol 3 and some other medications. These narcotic drugs are CNS and respiratory depressants. Consumption of large amounts of poppy seeds can also result in a positive. High concentrations of oxycodone can cause a positive.



Test for methamphetamine (“crank”), a stimulant that is snorted as a powder or injected. Methamphetamine is primarily illicitly manufactured. Use of meth is detectable within 30 minutes and up to several days after light and/or infrequent use. Chronic, heavy use will be detectable for a week or more. MDMA (Ecstasy) can cause a positive as well. Some diet and cold medicines (including pseudoephedrine) in larger doeses can cause false positives. Selegiline (Atapryl, Dipryl, Eldepryl) and benzphetamine (Didrex) metabolze to methamphetamine and can cause a positive. The Vicks inhaler, if used extensively, can cause a positive. Ranitidine (Zantac) in high concentrations may cause a positive.



Test for methadone (Dolophine), a synthetic narcotic that is used in the treatment of narcotic addiction and causes the same symptoms as narcotic use and abuse. After chronic use it may be detectable for several weeks. After oral use, it is detectable after about 30 minutes. If injected, detectable after 15 minutes.



Test for methylenedioxymethamphetamine (MDMA, Ecstasy), a stimulant, euphoric and hallucinogen. MDMA is detectable about 30 minutes after oral use and for up to about three days. This test is subject to positive from larger concentrations of methamphetamine and some diet and cold medicines.



Test for phencyclidine (“Angel dust”). PCP is a hallucinogen and stimulant. It is detectable for one to three days after use. It is usually smoked after application to cigar or cigarette as a liquid. It will be detectable about 15 minutes after use. Caution: PCP is minimal in the U.S. and there are false positives. Less than half of positives confirm as a positive. Venlafaxine (Effexor) may cause a false positive.



Test for oxycodone (Percodan, Percocet, Oxycontin), another narcotic analgesic with strong abuse and addiction potential. This teste can also detect other narcotics, oxymorphone (Numorphan), hydrocodone (Vicodin) and codeine. Oxycontin is widely prescribed for severe pain management as a time-release preparation. In a heroin overdoese, the Morphine test and Oxycodone test may both be positive. Oxycodone is detectable for several days after last use.



Test for the tricyclic antidepressant drugs amitriptyline, desipramine, doxepin, imipramine, nortriptyline and others. These drugs are taken orally for the treatment of depressive disorders. The newer antidepressants such as fluoxetine (Prozac) and paroxetine (Paxil) will not be detected by the TCA test. Cyclobenzaprine (Flexeril) can cause a positive as it is structurally similar to TCA’s.



  1. ATN FasTox 12 Reference Guide



1717 West Maud Poplar Bluff, MO 63901 
Phone: (573) 727-5600
Administration Fax: (573) 785-0753
Customer Service Fax: (573) 785-2369
Front Desk Fax: (573) 727-5686
Billing Fax: (573) 785-0125
HR Fax: (573) 727-5627
Lab/Processing Fax: (573) 727-5689

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