Our comprehensive menu of laboratory-based substance abuse testing options is designed to meet the needs of virtually any drug and alcohol testing program.

Numerous testing options and consistently good service are the primary focus of Local Drug Test’s drug testing services.

Local Drug Test constantly monitors market trends and the latest street drugs. Our commitment combined with leading-edge technology provides you with an innovative test portfolio that reflects societal trends.

Our drug testing laboratory network consists of strategically located facilities throughout the US, Canada, Mexico and Puerto Rico that are certified by the Substance Abuse and Mental Health Services Administration (SAMHSA).


Q: What testing methodology does Local Drug Test use to perform initial drug screening?

Urine Drug Test

A: Local Drug Test performs initial drug screening using immunoassay. An immunoassay is a test that uses antibodies to detect the presence of drugs and other substances in urine. The initial screening process does not measure the specific amount of drug present in urine samples. It provides either a positive or negative result, indicating the presence or absence of detectable drug.


Q: What is GC/MS?

A: GC/MS is the abbreviation for gas chromatography/mass spectrometry, the testing methodology Local Drug Test uses to confirm presumptive positive drug screen specimens. GC/MS provides identification of the molecule(s) based on characteristic fragmentation patterns at specific retention times. GC/MS is a tandem technology, utilizing a gas chromatograph coupled to a mass spectrometer.

Q: Why are screening and confirmation cut-off levels different?

A: Simply stated, screening and confirmation testing are performed using different testing methodologies that precipitate different cut-off levels. The immunoassay tests used to perform initial drug screening are designed to detect a wide range of chemically similar compounds that react with the antibodies which are at the core of the chemistry making up the tests. In contrast, GC/MS confirmatory testing detects specific metabolites that provide identification and quantification of a specific drug.

Q: To what does ng/mL refer?

A: Drug testing cut-off levels are usually expressed in the units of measure ng/mL (nanograms per milliliter). A quantitative positive GC/MS result is expressed in ng/mL.




Q: What is methamphetamine "d" and "l" isomer testing?

A: Methamphetamine is available in two forms: "d" and "l." These compounds are stereoisomers (chemical mirror images). They have the same chemical formula and similar chemical properties. The "d" form is a prescription stimulant and appetite suppressant. The "l" form is available over-the-counter as the active ingredient of the Vick's inhaler and is a metabolite of certain prescription medications. Both "d" and "l" test positive by both immunoassay and most GC/MS assays.1

Q: What do the percentages mean in methamphetamine "d" and "l" isomer test results?

DOT Drug Test

A: In order to help determine whether a methamphetamine positive may be due to an illicit source, it is helpful to determine the percentage of "d" isomer. For example, following an individual's use of Vick's Vapor Inhaler, the expected result would be 100% "l" methamphetamine. However, there is a possibility that trace amounts of "d" isomer may be present in the quantitative analysis. Laboratory guidelines have been established to allow for trace presence of the "d" isomer. If the laboratory report indicates more than 80% "l" methamphetamine, the results are consistent with Vick's Vapor Inhaler use. If the laboratory reports more than 20% "d" methamphetamine present, the result indicates the use of "d" methamphetamine other than the inhaler. Illegally produced methamphetamine and amphetamine may contain mixtures of "d" and "l" isomers. Local Drug Test always use a medical review officer (MRO) to review all non-negative test results.

Q: What is the drug MDMA/Ecstasy?

A: Ecstasy is a commonly used street-name for MDMA (3,4-methylenedioxymethamphetamine). MDMA is an illegal drug with characteristics of both stimulants and hallucinogens. In the mid 1980s, MDMA was being used at all night dance parties, now referred to as "raves". In 1985, the US Drug Enforcement Administration moved the drug to Schedule 1 status with no accepted medical use.

Q: Why isn't MDMA detected in my standard amphetamine screen?

A: MDMA is a synthetic amphetamine structure and does cross-react with existing amphetamine assays. However, the cut-offs established for amphetamine by the government do not pick up concentrations of MDMA in urine that are typically there following exposure. To enable detection of MDMA following normal exposures, Local Drug Test uses reagents developed specifically for MDMA detection.


Q: What is 6-acetylmorphine?

A: 6-acetylemorphine (6-AM) is an intermediate metabolite between heroin and morphine. Generally, 6-AM is present for a short time after use of heroin.

Q: What tests does Local Drug Test offer to detect synthetic opiates?

A: Local Drug Test offers an opiate 4 test that is designed to detect codeine, morphine, hydrocodone, and hydromorphone. Additionally, Local Drug Test offers a screening and confirmation test specifically designed to detect oxycodone.

Q: What are OxyContin® and oxycodone?

A: OxyContin® tablets are a controlled-release oral formulation of oxycodone hydrochloride generally indicated for the management of moderate to severe pain when a continuous, around-the-clock analgesic is needed for an extended period. Oxycodone is a semisynthetic narcotic analgesic classified by the US Drug Enforcement Administration as a Schedule II controlled substance with an abuse liability similar to morphine.


Q: What is specimen validity testing?

A: Specimen validity testing (SVT) is performed on a drug screen specimen to detect substitution, adulteration, or dilution. See the Drugs of Abuse Reference Guide for additional information on SVT.

  • Substitution - Submission of a specimen that is not     characteristic of human urine.    
  •  Typically, this may be water or     water with salt in it and is identified by extreme creatinine and specific     gravity results.
  • Adulteration - Adding a substance to a specimen after     it has been collected. The product added is designed to mask the presence     of, or chemically destroy, the drug or drug metabolite that the specimen     may contain. An adulterant product may be added with the intention of     adversely affecting the testing reagents.    
  • Dilution - Result of ingestion of large amounts     of water typically just before urine donation or as a result of     physiological conditions. Specimens meeting dilute specifications     typically are not considered questionable donations.

Q: Does the lab conduct SVT before screening for drugs?

A: No, specimen validity testing is performed simultaneously with the initial drug screens. Depending upon the drug screen and the specimen validity results, the laboratory will release (1) both the drug screen and the specimen validity test results, (2) the specimen validity test results only, or (3) the drug screen results only.

Q: Is the nitrite test threshold based on body functions, or does it allow for infection, food ingestion with high nitrates, and water consumption with high nitrites?

A: The nitrite threshold level established by the Federal Government is 500ug/mL. This is based on the level at which a drug screen may be impacted by this adulterant and by which no normal physiological level has been detected.

Q: How would a drug test be evaluated when nitrates are 490 ng/mL?

A: The nitrite result would be negative, as this level would not interfere with our testing process. The drug test(s) ordered would be conducted and reported following standard operating procedures.

The detection windows depend upon multiple factors - drug class, amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH. For ease of use, the detection times of metabolites have been incorporated into each parent drug. For example, heroin and cocaine can only be detected for a few hours after use, but their metabolites can be detected for several days in urine. In this type of situation, we will report the (longer) detection times of the metabolites.



Private Drug Test

At Local Drug Testing centers, we of legal, admissible in court drug tests. Local Drug Testing offers DOT certified drug test, reasonable suspicion DOT drug test, and 24/7 after-hours mobile on-site DOT and non-DOT drug and alcohol (BAT – breathalyzer) testing. Technician will be dispatched to the scene of accident or to your office. We provide pre-employment drug and alcohol testing. Local Drug Testing centers, we also offer urine alcohol test, and urine EtG Test (Ethylglucuronide, EtG 80 hours alcohol test), test for bath salts, Instant drug testing, DOT coast guard license drug test (USCG), steroid profile (sport drug test, drug test for athletes), flunitrazepam (Rohypnol, date rape drug, roofies, Rohypnol, GHB), following panels: 5 panel urine drug test, 6 panel urine drug test, 7 panel urine drug test, 8 panel urine drug test, 9 panel urine drug test, 10 panel urine drug test, 11 panel urine drug test, 12 panel urine drug test, 13 panel urine drug test, 14 panel urine drug test, 15 panel urine drug test, 16 panel urine drug test, 17 panel urine drug test, 18 panel urine drug test, 19 panel urine drug test, 20 panel urine drug test, 5 panel hair follicle drug test, 6 panel hair follicle drug test, 7 panel hair follicle drug test, 8 panel hair follicle drug test, 9 panel hair follicle drug test, 10 panel hair follicle drug test, 11 panel hair follicle drug test, 12 panel hair follicle drug test, 13 panel hair follicle drug test, 14 panel hair follicle drug test, 15 panel hair follicle drug test, 16 panel hair follicle drug test, 17 panel hair follicle drug test, 18 panel hair follicle drug test, 19 panel hair follicle drug test, 20 panel hair follicle drug test. We also offer observed drug and alcohol testing, and test for nicotine (urine nicotine test, test for smoking). At Local Drug Test we can accommodate all of your drug, and alcohol testing needs. We offer DOT random pool for $99 a year (DOT random program, DOT consortium), DOT supervisor training, and full DOT compliance program. We offer drug testing for nursing programs and medical schools (nursing drug test, medical student drug test).We test for Amphetamines, Cocaine, Benzodiazepines, Opiates, THC (Marijuana), PCP (Phencyclidine), Barbiturates, Methamphetamine, MDMA (Ecstasy), MTD-Methadone, OXY (Oxycodone), PPX-Propoxphene,etc. All of our drug tests are done at SAMSHA and AABB certified laboratories and reviewed by a specially trained and licensed Physician also known as Medical Review Officer (MRO), and can be used in court of law. Where to get drug test? Local Drug Test can perform drugtest for DUW drug test, DWI drug test, DUW alcohol test, DWI alcohol test. DOT drug test, drug test for drivers, drug test for child custody, divorce drug test, daily color code drug test, pre-trial drug test, drug test for probation, court ordered drug test, urine EtG test, 80 hour alcohol urine test, pro anabolic steroid panel, athletes urine drug test, athletes steroid drug test, bolasternone, boldenone, fluoxymesterone, clostebol - 4-chlorotestosterone, danazol, drostanolone, mesterolone, mesterolone. USCG Test, USCG urine drug test, Merchant Marines Drug Test, Captain License drug test. Where do you find drug test in my area? Local Drug Test is the place! Please call Local Drug Test experts at 800-973-5199 to ensure you get the drug test that's right for you. Same day appointments! 




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