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At our 32 testing facilities in San Diego, California, Accredited Drug Testing delivers extensive drug and alcohol screening services. We perform DOT and non-DOT urine drug evaluations, breath alcohol assessments, EtG alcohol screenings, and hair drug evaluations tailored for personal, workplace, or legal purposes. Utilizing rapid results testing and SAMSA certified lab analysis, we offer same day service in San Diego, CA, with most centers conveniently located near your residence or office. We also provide Occupational Health Testing, Clinical Testing, and Background Checks.
Reach us at (800) 221-4291 or register online with ease. Choose your testing type and select a nearby center—available for personal, professional, or third-party use. Our testing services are Fast and Easy; you can contact our scheduling department or arrange your testing online anytime. Our efficient and intuitive process makes drug testing near San Diego a straightforward task.
* 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 San Diego 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
DOT Employer Drug Policy Development
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.
San Diego County reported over 700 drug-related deaths in 2020, a significant increase from previous years.
According to the San Diego Health Department, opioid overdose deaths rose by more than 50% between 2019 and 2021 in the county.
In San Diego, methamphetamine remains the most commonly reported drug in substance abuse treatment admissions.
The National Institute on Drug Abuse indicates that nearly 20% of San Diego's youth have misused prescription drugs.
In 2021, San Diego County saw a rise in fentanyl-related deaths, with numbers doubling from the previous year.
San Diego has implemented over 150 drug prevention programs targeting middle and high school students.
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 San Diego, CA, are adopting stringent drug testing policies to maintain workplace safety and productivity. Many organizations comply with federal guidelines issued by the Substance Abuse and Mental Health Services Administration (SAMHSA) to conduct random drug tests.
Local businesses often partner with drug testing companies to implement procedures that help identify employees who may be under the influence of substances. These policies not only ensure a drug-free environment but also provide support through Employee Assistance Programs (EAPs) for individuals seeking help.
Additionally, the California Department of Fair Employment and Housing safeguards against discrimination, ensuring fair treatment for employees who may be undergoing rehabilitation. This balanced approach helps create a supportive yet responsible work environment in San Diego.
The government of San Diego, CA, is actively combatting drug abuse through a variety of initiatives. The County's Health and Human Services Agency collaborates with local organizations to offer prevention and treatment programs. These initiatives are designed to reduce the impact of alcohol and drug abuse while promoting public health and safety.
On a broader scale, state-level efforts are bolstered by the California Department of Health Care Services, which provides funding and support for treatment and prevention programs throughout San Diego County. These programs are aimed at reducing substance abuse rates through education, intervention, and rehabilitation services.
San Diego's law enforcement agencies have been actively involved in combating drug trafficking, leading to a significant bust recently. Authorities intercepted a large shipment of methamphetamine near the border, resulting in the arrest of multiple individuals believed to be part of an extensive drug network operating in Southern California. The operation highlights ongoing efforts to thwart the flow of illegal substances into the region.
In another notable incident, the San Diego Police Department, in conjunction with federal agencies, dismantled a local fentanyl distribution ring. This operation culminated in the seizure of thousands of counterfeit pills laced with fentanyl. The success of this bust underscores the critical need for continued vigilance against the surge of synthetic opioids in the area, which pose a heightened threat to public health.
Collaboration between state, local, and federal law enforcement units in San Diego has been pivotal in curtailing drug activities. Noteworthy was a recently conducted raid on a suspected cartel safe house, resulting in the confiscation of several kilograms of cocaine. This strike demonstrates the effectiveness of intelligence-led policing in taking down organized criminal operations linked to drug trafficking along the California-Mexico corridor.
Accredited Drug Testing offers fast, reliable employment screening services in San Diego, CA. Trusted by employers nationwide for accurate results and exceptional service.
California DOT/Non DOT Physicals
San Diego County Alcohol and Drug Services
NCADD of San Diego
Scripps Health Drug and Alcohol Rehabilitation
Al-Anon Family Groups
San Diego Police Department Drug Prevention
Recovery.org San Diego Resources
California DHCS Substance Use Disorder Services
SAMHSA National Helpline
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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
Everything was great, the staff was very polite. Thank you.
Olga Petrova - 9/19/2024
The visit here is always the best . The place is always really clean. The employees are super courteous, very polite, and professional. This is the only drug lab I like to go do my drug and alcohol test. I would like to tell them thank you so much for thier excellent performance and job
Eli Gonzalez - 1/4/2025