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Accredited Drug Testing provides a full range of drug and alcohol testing services at our 36 locations in the Merrifield, Virginia area. Our offerings include both DOT and non-DOT urine drug tests, breath alcohol analyses, hair drug screenings, and EtG alcohol tests tailored for personal, workplace, and legal requirements. In Merrifield, VA, we ensure swift test results, pairing rapid assessments with SAMSA certified lab evaluations. Same-day services are an option, and most Merrifield testing centers are conveniently situated near residential and office areas. We also offer Occupational Health Testing, Clinical Exams, and Background Verification services.
To arrange testing, dial (800) 221-4291 or register through our website. Select the specific test you need and pick a nearby center, whether it's for personal, employee, or third-party purposes. Our scheduling process is Fast and Easy—reach our team or book online any time, day or night. Our efficient platform makes organizing a drug test near Merrifield straightforward and hassle-free.
* 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 Merrifield 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.
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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 Merrifield, Fairfax County, drug abuse among teens increased by 15% over the past year, according to a 2022 report.
Fairfax County saw a rise in opioid-related deaths, with Merrifield accounting for 10% of the total cases in 2022.
Methamphetamine-related arrests in Merrifield, Fairfax County, have surged by 20% in the last two years.
A 2022 Fairfax County survey highlighted that 12% of Merrifield adults reported misuse of prescription drugs.
Substance abuse treatment admissions in Merrifield, Fairfax County, increased by 18% from 2021 to 2022.
Fairfax County data revealed a steady increase in heroin use in Merrifield, making up 8% of countywide cases in 2022.
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
Employers in Merrifield, Fairfax County, are increasingly implementing stringent drug testing policies to maintain a safe workplace. Many organizations rely on guidelines from the Department of Labor to structure their policies. Regular testing is often required, particularly in industries involving public safety or federal contracts.
Local businesses prioritize a drug-free environment by conducting pre-employment, random, and post-accident testing. Employers aim to not only comply with state and federal laws but also to reduce workplace incidents related to drug use. Resources are often extended to employees who seek rehabilitation, in line with broader community support initiatives.
The government of Merrifield, under Fairfax County's jurisdiction, is actively working to combat drug problems through various initiatives. Programs like the Fairfax County Community Services Board focus on prevention and education. Efforts are also supported by state grants aimed at expanding treatment services and community education.
Law enforcement, in collaboration with the DEA, conducts regular drug take-back events to prevent prescription drug misuse in Merrifield. Additionally, initiatives such as the Drug-Free Fairfax campaign focus on reducing drug availability and impact through community partnerships and policy advocacy.
Recent law enforcement activities in Merrifield, Fairfax County, have led to significant drug busts. In 2022, a joint operation between local police and federal agencies dismantled a major cocaine distribution ring operating in the area. The operation resulted in multiple arrests and seizures of illicit substances.
Regular community alerts by Fairfax County Police aim to educate residents about ongoing issues related to drug trafficking and abuse. Public information meetings often discuss the outcomes of recent operations, emphasizing the importance of community involvement in addressing drug-related challenges.
Accredited Drug Testing offers fast, reliable employment screening services in Merrifield, VA. Trusted by employers nationwide for accurate results and exceptional service.
Fairfax County Community Services Board
Virginia Association of Drug Court Professionals
Virginia Department of Behavioral Health and Developmental Services
Virginia Association of Community Services Boards
Substance Abuse and Mental Health Services Administration
Fairfax County Health Department
Partnership to End Addiction
Blue Ridge Area Food Bank: Health & Outreach
National Volunteer Fire Council
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Trish last week and Tatiana this week, very fun and easy folks to deal with. Well be using them more and more in the future.
Tom O - 12/19/2024
Trish was amazing and got me through the sytem very fast and swift. I had a hard time hearing her a couple of times, but she was super sweet and helpful throughout the process. Highly recommend her!
Sophia Schutze - 6/19/2024
I've had to use this service twice for out of state physicians we've hired and both times it was super easy. Both customer service reps I spoke with were super helpful and courteous. I won't hesitate to use their service again if needed.
Alicia Rau - 6/19/2024