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At our 34 Washington, DC area testing sites, Accredited Drug Testing provides all-inclusive drug and alcohol assessments. We conduct a range of tests for various needs, including DOT and non-DOT urine drug exams, breath alcohol evaluations, EtG alcohol checks, and hair drug analyses, catering to individuals, businesses, and legal requirements. Located for convenience, many tests offer speedy results, certified by SAMSA, and same-day service options. Within minutes from work or home, we also offer Occupational Health Testing, Clinical Testing, and Background Checks.
Contact us by calling (800) 221-4291 or registering online. Select your desired test, pick a convenient location, and arrange testing whether for yourself or another. Scheduling is quick and straightforward via our call center or 24/7 online booking. Our efficient system simplifies the process of securing drug testing near Washington.
* You must register by phone or online to receive your donor pass/registration prior to proceeding to the testing center. You must bring a valid government issued ID along with the registration/barcode number which was sent to you by email.
When you're searching for drug testing near me or drug testing locations, we provide a simple and convenient process to find a drug and alcohol testing location near you that is certified to provide all of your drug and alcohol testing needs.
At our Washington drug testing collection sites, Accredited Drug Testing provides one of the widest selections of drug and alcohol testing services available. Whether you're an employer, attorney, court, or private individual, we offer both DOT and non-DOT testing options—ranging from rapid tests to comprehensive lab-based screenings—capable of detecting nearly any substance.
DOT Drug Testing and Requirements
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If you're an employer needing to test 25 or more employees and looking to save time and money, we offer mobile on-site drug testing where we come to you. Call us today for more information.
In 2021, Washington, DC saw over 400 opioid-related deaths, continuing a troubling trend in the District, Washington County.
DC's rate of drug overdose deaths was among the highest in the nation, with opioids being a major contributor.
In Washington, DC, roughly 5% of residents reported illicit drug use in the past month in recent surveys.
Cocaine was involved in approximately 25% of fatal overdoses in Washington, DC in 2022.
Prescription drug misuse is rising in Washington, DC, with an estimated 6% of the population affected.
Drug elimination is the sum of the processes of removing an administered drug from the body. In the pharmacokinetic ADME scheme (absorption, distribution, metabolism, and excretion), it is frequently considered to encompass both metabolism and excretion. Hydrophobic drugs, to be excreted, must undergo metabolic modification making them more polar. Hydrophilic drugs, on the other hand, can undergo excretion directly, without the need for metabolic changes to their molecular structures.
Although many sites of metabolism and excretion exist, the chief organ of metabolism is the liver, while the organ primarily tasked with excretion is the kidney. Any significant dysfunction in either organ can result in the accumulation of the drug or its metabolites in toxic concentrations.
A variety of other factors impact elimination — intrinsic drug properties, such as polarity, size, or pKa. Also other factors include genetic variation among individuals, disease states affecting other organs, and pathways involved in the way the drug distributes through the body, such as first-pass metabolism.
Drug elimination is the removal of an administered drug from the body. It is accomplished in two ways, either by excretion of an unmetabolized drug in its intact form or by metabolic biotransformation followed by excretion. While excretion is primarily carried out by the kidneys, other organ systems are involved as well. Similarly, the liver is the primary site of biotransformation, yet extrahepatic metabolism takes place in a variety of organ systems affecting multiple drugs.
Given the multiple organ systems and the variety of metabolic transformations present, drug elimination can entail a significant degree of complexity. Hydrophilic drugs are typically directly excreted by the kidneys, while hydrophobic drugs undergo biotransformation before excretion. The purpose here is twofold – biotransformation serves both detoxify the exogenous substances as well as to increase their hydrophilicity, ensuring their elimination via the kidneys.
Two broad metabolic pathways of hepatic drug transformation exist. Phase I is the direct modification of the target molecule, whereas phase II entails conjugation of the target to a polar molecule of low molecular weight. Phase I prepare the drug to enter phase II, but single-phase metabolism also exists.
Phase I involves oxidation, reduction, and hydrolysis of the exogenous molecule. These reactions are accomplished by hepatic microsomal enzymes, which reside in the smooth endoplasmic reticulum of the hepatocytes. Best known among them is the cytochrome P450 system, whose enzymes are predominantly involved in oxidative metabolism. Within the cytochrome P450 family (CYP), the enzyme responsible for the metabolism of more than 50% of existing drugs is the CYP3A4. Its activity encompasses various classes of medications, including opioids, immunosuppressants, antihistamines, and benzodiazepines. The enzymes can also be induced or inhibited by a variety of substances they interact with, including pharmaceuticals. The increase in metabolic activity with CYP induction results in a diminished activity of drugs targeted by that particular isoform. Conversely, CYP inhibition will result in increased drug plasma concentration, potentially leading toxicity. The CYP3A4 is induced by phenytoin, phenobarbital, and St. John's wort, while diltiazem, erythromycin, and grapefruit inhibit it. Caution is, therefore, necessary when administering CYP3A4-metabolized drugs in the presence of any of the inhibitors or inducers.
Phase II consists of covalent bonding of polar groups to nonpolar molecules to render them water-soluble and allow renal or biliary excretion. Target molecules enter phase II directly or via initial processing through phase I. A variety of polar adjuncts is transferred, including amino acids, glucuronic acid, glutathione, acetate, and sulfate. Glucuronidation is one of the major pathways of phase II biotransformation. The UDP-glucuronosyltransferase (UGT) enzyme family performs this activity. Typically, glucuronide derivatives possess less or no activity of the original drug, but in some cases, pharmacologically active compounds result. Morphine-6-glucuronide is a phase II metabolite of morphine with significant analgesic activity. As with the CYP enzymes, inducers, and inhibitors of phase II, enzymes exist and may influence the efficacy of drugs that rely on conjugation before excretion.
The first-pass effect is a feature of hepatic metabolism that also plays a role in the elimination of multiple drugs. Here, the enteric consumed drugs are exposed directly to the liver via the portal vein, where they undergo biotransformation before entering the systemic circulation. This activity reduces the bioavailability and needs to be factored into the dose administered to the patient. Intravenously administered drugs are not subject to the first-pass effect.
Extrahepatic drug metabolism takes place in the GI tract, kidneys, lungs, plasma, and skin.
Renal excretion completes the process of elimination that begins in the liver. Polar drugs or their metabolites get filtered in the kidneys and typically do not undergo reabsorption. They subsequently get excreted in the urine. Urinary pH has a significant impact on excretion, as drug ionization changes depending on the alkaline or acidic environment. Increased excretion occurs with weakly acidic drugs in basic urine and weakly basic drugs in acidic urine.
Excretion in the bile is another significant form of drug elimination. The liver can actively secrete ionized drugs with a molecular weight greater than 300 g/mol into bile, from where they reach the digestive tract and are either eliminated in feces or reabsorbed as part of the enterohepatic cycle.
Other pathways of excretion include the lungs, breast milk, sweat, saliva, and tears
In Washington, DC, many employers implement drug testing policies to ensure a safe workplace and comply with federal regulations. These policies often include pre-employment screenings and random drug tests. The U.S. Department of Labor provides guidelines on workplace drug testing policies.
Employers are encouraged to adopt comprehensive drug-free workplace programs that include testing, education, and employee assistance programs. Such initiatives help mitigate the impact of drug abuse on productivity and workplace safety. For more resources, see the SAMHSA's Workplace Programs.
Government efforts in Washington, DC aim to combat drug abuse through various programs and initiatives. The city has implemented measures such as increased funding for public health programs and rapid intervention policies. For more information, you can visit the District of Columbia Department of Behavioral Health.
The DC government collaborates with federal agencies to address the root causes of drug abuse. Efforts include outreach and education programs to prevent addiction and provide access to treatment resources. Details about these initiatives can be found on the Office of National Drug Control Policy's website.
Recently, Washington, DC has experienced a surge in law enforcement activity aimed at curbing drug trafficking. Coordinated efforts between local police and federal agencies have resulted in several significant arrests. The investigations often focus on high-traffic areas and involve undercover operations to dismantle networks supplying illegal narcotics, enhancing public safety and diminishing street-level drug availability.
In response to the growing opioid crisis, DC authorities have intensified their crackdown on drug distribution channels. Special task forces are targeting key figures suspected of smuggling potent opioids into the city. These operations are part of a broader strategy to prevent overdoses and reduce addiction rates by eliminating sources of illicit drugs, ultimately striving for healthier community outcomes.
DC's local government has also taken steps to address the root causes of drug abuse and dependency. Community programs offer rehabilitation resources alongside law enforcement actions, ensuring that individuals affected by addiction have access to necessary support. These initiatives aim to diminish repeat offenses and offer pathways to recovery, reflecting a comprehensive approach to a complex social issue.
In several high-profile cases, DC law enforcement officials have discovered sophisticated drug trafficking networks operating within the city. These operations span multiple jurisdictions, requiring collaboration across state lines. By intercepting shipments and arresting key operatives, authorities disrupt these illegal enterprises, showcasing the challenges of controlling drug flow in a major metropolitan area.
Accredited Drug Testing offers fast, reliable employment screening services in Washington, DC. Trusted by employers nationwide for accurate results and exceptional service.
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DC Department of Behavioral Health
SAMHSA National Helpline
PA Department of Drug and Alcohol Programs
Whitman-Walker Health
Council on Recovery
Office of the Mayor DC
Recovery.org Washington DC
Sober Nation Directory
DrugAbuse.com Washington DC Guide
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DNA testing for legal and non-legal purposes including child support, and child custody around Washington, DC.
Including specimen collector training, DER training, reasonable suspicion training and much more in Washington, DC.v
Get fast, accurate hair drug testing at our convenient Washington, DC locations—results you can trust, every time!
Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Washington, DC.
Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Washington, DC.
Accurate 5 panel drug testing with fast, confidential results—trusted by Washington, DC employers and individuals nationwide.
Comprehensive 10 panel drug testing with fast, reliable results—trusted for Washington, DC workplace and personal testing needs.
Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Washington, DC workplace compliant.
Certified DOT physicals with quick, reliable exams to keep Washington, DC drivers compliant and on the road with confidence.
Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.
Excellent service! Trish went above and beyond to find me a testing site as close to my home as possible. Results were faster than expected, as well. Thanks for your help, Trish and Accredited!
Es Hache - 4/13/2025
They were very helpful in finding a place to get tested on the route back home! They made a difficult time seem easy with no judgement!
Anne Creden - 11/19/2024
I needed a quick drug test for visitation with my children. I called at 6am they answered and set me up with a place a couple miles from my house to go get the test done, that was on Wednesday, I had the results on Friday afternoon and was able to see my kids on Saturday. Thank you for the help!
Mark Broadhead - 2/12/2025
Accredited has been wonderful to work with! My court ordered tests are on a very strange schedule but every time I call, they are quick to schedule me and are always able to find a location that works for where I’m at and when! Thank you for making this rather undesirable situation less stressful and efficient.
Madison Sanderford - 8/19/2024
They were very fast extremely polite walked you through every detail of the process if you had any questions they had no problems answering
Billy Williams - 2/19/2025
This is by far the easiest way to get my lab work ordered and paid for. The phone calls are short and to the point. They don’t try to push extra sales on you and when I walk in to the clinic I simply show my donor pass and with in a matter of minutes I’m done. I will continue to use ADT in the future.
Jason Jackson - 7/19/2025
I love the customer service. The lady was patient enough to help me book my appointment with ease and ensuring I get the location that's best for me. Keep up the good work!
Elizabeth Chiaka - 9/19/2024
I always have a good experience setting up company driver drug screens through ADT. I'm really happy I found them while searching online, they have made my job much easier.
Exodus Heath - 2/13/2025
It was a pretty straightforward process getting an appointment and making payment. Getting to the testing site was quick. I was in and out in no time.
Sadiat Ogunyemi - 12/19/2024
Fantastic experience from the beginning. Jocelyn was very helpful to me as someone who doesn’t have much experience in needing a test. They were very helpful and walked me through the entire process start to finish. Thank you ADT!
Riley Wilson - 2/18/2025