Drug Testing Locations - Derby, TX

Employment, DOT, Court Ordered, Personal
Urine| Hair Follicle | Oral Fluid | Blood | ETG

33 Drug-Testing Centers in Derby

Minutes Away, Test Today

217 E Salinas St7.14 miles

217 E Salinas St
Dilley, TX 78017

2200 S Interstate 357.31 miles

2200 S Interstate 35
Pearsall, TX 78061

2841 Fm 117 N7.60 miles

2841 Fm 117 N
Dilley, TX 78017

710 N Main7.92 miles

710 N Main
Dilley, TX 78017

158 Medical Dr8.69 miles

158 Medical Dr
Pearsall, TX 78061

325 N Cherry St8.78 miles

325 N Cherry St
Pearsall, TX 78061

320 Berry Ranch Rd9.18 miles

320 Berry Ranch Rd
Pearsall, TX 78061

401 Lone Star Rd23.31 miles

401 Lone Star Rd
Cotulla, TX 78014

102 Frio23.90 miles

102 Frio
Cotulla, TX 78014

207 Tilden24.02 miles

207 Tilden
Cotulla, TX 78014

204 S Main St24.03 miles

204 S Main St
Cotulla, TX 78014

105 S Stewart St24.15 miles

105 S Stewart St
Cotulla, TX 78014

608 Fowlerton Rd31.27 miles

608 Fowlerton Rd
Tilden, TX 78072

1905 Highway 97 E35.00 miles

1905 Highway 97 E
Jourdanton, TX 78026

1105 Oak St Ste A36.94 miles

1105 Oak St Ste A
Jourdanton, TX 78026

2106 W Oaklawn Rd38.75 miles

2106 W Oaklawn Rd
Pleasanton, TX 78064

3100 Avenue E38.96 miles

3100 Avenue E
Hondo, TX 78861

110 Preston St40.88 miles

110 Preston St
Pleasanton, TX 78064

310 W Oaklawn Rd40.92 miles

310 W Oaklawn Rd
Pleasanton, TX 78064

201 S Main St41.05 miles

201 S Main St
Pleasanton, TX 78064

1504 2nd St41.72 miles

1504 2nd St
Pleasanton, TX 78064

11981 South Us 8341.82 miles

11981 South Us 83
Asherton, TX 78827

1713 E State Highway 9742.21 miles

1713 E State Highway 97
Pleasanton, TX 78064

308 S Cesar Chavez Ave42.63 miles

308 S Cesar Chavez Ave
Crystal City, TX 78839

1501 Houston St42.67 miles

1501 Houston St
Castroville, TX 78009

2843 S Highway 8346.23 miles

2843 S Highway 83
Carrizo Springs, TX 78834

409 E Nopal St47.15 miles

409 E Nopal St
Carrizo Springs, TX 78834

401 E Nopal St47.16 miles

401 E Nopal St
Carrizo Springs, TX 78834

609 N 1st St47.31 miles

609 N 1st St
Carrizo Springs, TX 78834

1195 Garner Field Rd Ste 30049.25 miles

1195 Garner Field Rd Ste 300
Uvalde, TX 78801

1025 Garner Field Rd49.37 miles

1025 Garner Field Rd
Uvalde, TX 78801

3040 E Main St49.40 miles

3040 E Main St
Uvalde, TX 78801

2420 E Main St49.43 miles

2420 E Main St
Uvalde, TX 78801

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing ensures thorough drug and alcohol screening services at 33 testing centers located in the Derby, Texas area. Our offerings include both DOT and non-DOT urine drug testing, breath alcohol tests, EtG alcohol screenings, and hair drug tests, suitable for personal, employment, and legal purposes. We provide swift result testing and certified laboratory analysis via SAMSA in Derby, TX, with same-day service often available. Most Derby testing sites are conveniently situated minutes from your residence or workplace. We also offer Occupational Health Testing, Clinical Testing, and Background Checks.

Dial (800) 221-4291 or register online at your convenience. Select the required test and choose a facility nearby—services are accessible for yourself, employees, or another person. It's Fast and Simple to schedule a test; you can contact our scheduling team or book online anytime. Our efficient and user-friendly process makes arranging drug tests near Derby unbelievably easy.

* 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.

Derby, TX Drug Testing

Drug Testing Services Available at Our Derby, TX Labs:

At our Derby 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.

Mobile/On-Site Drug Testing

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.

Drug Testing in Derby, TX

Derby, Texas Statistics

In Derby, TX, Frio County, 7% of high school students reported misusing prescription drugs without a prescription in 2022.

Frio County, which includes Derby, recorded a 15% increase in drug-related arrests from 2021 to 2022.

The city of Derby, TX saw a 10% rise in opioid-related hospitalizations in Frio County between 2020 and 2022.

In Derby, within Frio County, 25% of adults have reported experimenting with illegal drugs at least once, according to a 2022 survey.

Frio County's Derby area reported a 12% increase in drug overdose cases admitted to local hospitals in 2022.

Police in Frio County, covering Derby, seized approximately 2,000 grams of methamphetamine in 2022.

How does the body eliminate Drugs

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.

Issues of Concern

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 Derby, TX & Drug Testing Policies

Employers in Derby, TX, prioritize maintaining a drug-free workplace. Many have implemented mandatory drug testing policies, often conducted through partnerships with organizations like SAMHSA. Such routines aim to enhance safety and productivity.

Routine drug testing is highly encouraged by both local government and business associations. It serves not only as a preventive measure but also aids in providing employees access to rehabilitation resources if necessary. Businesses in the area are committed to supporting initiatives that help create a healthier work environment overall.

Small businesses and larger companies alike follow strict guidelines set forth by the federal government. These measures support statewide efforts in reducing drug and alcohol misuse among the workforce, ensuring the overall well-being of employees in Derby, TX.

Government Efforts with Drug Problems in Derby, TX

The government of Derby, TX, has been actively working to combat drug abuse through various initiatives. Collaboratively, the Office on Violence Against Women funds several organizations to create awareness and provide support to victims.

Furthermore, Frio County has received state funding to implement drug prevention programs, aiming to reduce substance abuse among the youth. These efforts are part of a larger initiative coordinated by the Texas Health and Human Services to combat the opioid crisis.

Local Drug Busts & News in Derby, TX

Local law enforcement in Derby, TX, frequently collaborates with Frio County officials to conduct raids aimed at tackling illicit drug operations. A notable bust in 2022 led to the confiscation of significant quantities of illegal substances, making headlines throughout the community.

The Derby police department, along with federal agents, organized a major operation to dismantle a drug trafficking network operating across the region. The success of these operations is credited to the coordinated efforts between city and county agencies, showcasing the effectiveness of collaborative law enforcement.

Community events in Derby have also been directed towards raising awareness about the dangers of drug abuse. Engaging activities like informational fairs and anti-drug campaigns are regularly held to educate the public and promote healthier living choices, illustrating the proactive stance Derby takes against drug misuse.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in Derby, TX. Trusted by employers nationwide for accurate results and exceptional service.

Texas DOT/Non DOT Physicals

Texas Vision Tests

Texas Audiograms

Texas Respirator Fit Tests

Texas Lift Tests

Texas Background Checks

Resources & Citations

Texas Health and Human Services

Texas Drug and Alcohol Program

Texas Centers for Alcohol & Drug Abuse

National Institute on Drug Abuse

SAMHSA National Helpline

South Carolina Department of Alcohol and Other Drug Abuse Services (Caution: SC not local)

Nar-Anon Family Groups

National Association of Addiction Treatment Providers

Community Action Research in Berry County

Derby Drug Testing

Quickly find trusted local drug testing centers in Derby, TX — fast, convenient, and reliable every time!

Derby DOT Drug Testing

Quickly find a local DOT drug testing center in Derby, TX — fast, reliable, convenient nationwide service!

Derby DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Derby, TX.

Derby Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Derby, TX.v

Derby Hair Drug Testing

Get fast, accurate hair drug testing at our convenient Derby, TX locations—results you can trust, every time!

Derby Alcohol Testing

Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Derby, TX.

Derby Drug Testing Services

Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Derby, TX.

Derby 5 Panel Drug Test

Accurate 5 panel drug testing with fast, confidential results—trusted by Derby, TX employers and individuals nationwide.

Derby 10 Panel Drug Test

Comprehensive 10 panel drug testing with fast, reliable results—trusted for Derby, TX workplace and personal testing needs.

Derby On Site Drug Testing

Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Derby, TX workplace compliant.

Derby DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Derby, TX drivers compliant and on the road with confidence.

DOT Consortium

Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.


Frequently Asked Questions

Yes. Accredited Drug Testing maintains access to numerous collection sites nationwide, so in most cases a testing location is available close to a donor’s home, workplace, or job site. Same-day scheduling is often possible for both drug and alcohol testing needs.
Employers, DOT-regulated companies, attorneys, courts, probation departments, and private individuals all use Accredited Drug Testing locations. You do not need to be part of a large company to request testing — individuals can order testing directly.
Locations support urine drug tests, hair follicle drug tests, saliva/oral fluid drug tests, instant/rapid screening (where permitted), and evidential breath alcohol testing. Post-accident and reasonable suspicion testing are also available.
Yes. Accredited Drug Testing supports DOT-compliant urine drug testing and evidential breath alcohol testing following 49 CFR Part 40 requirements. This includes pre-employment, random, post-accident, reasonable suspicion, return-to-duty, and follow-up testing for safety-sensitive employees.
In many cases, yes. Same-day or next-day appointments can typically be arranged. This is especially important for urgent needs such as post-accident, reasonable suspicion, court deadlines, or probation compliance.
Yes. Results are released only to the authorized recipient — for example, an employer’s designated representative, the court or probation contact, or the individual who ordered the test. Results are handled securely and are suitable for policy enforcement and legal documentation.
Yes. Accredited Drug Testing offers on-site and mobile collections for employers. Mobile testing is useful for post-accident response, reasonable suspicion situations, high-volume hiring events, and remote job sites where sending employees offsite would cause downtime.
No. You do not need a physician's prescription to request most drug or alcohol tests. Individuals, employers, attorneys, and probation officers can schedule testing directly and send the donor to the assigned collection site.

Customer Reviews

Very Fun and Easy

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

Sweet and helpful

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

Super helpful and courteous

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


(800) 221-4291