Drug Testing Locations - Knowlton, WI

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

38 Drug-Testing Centers in Knowlton

Minutes Away, Test Today

385 Orbiting Dr4.83 miles

385 Orbiting Dr
Mosinee, WI 54455

5805 74th Avenue North8.16 miles

5805 74th Avenue North
Brooklyn, MN 54443

3301 Cranberry Blvd 2nd Fl13.27 miles

3301 Cranberry Blvd 2nd Fl
Weston, WI 54476

3501 Cranberry Blvd13.27 miles

3501 Cranberry Blvd
Weston, WI 54476

4005 Community Center Dr13.50 miles

4005 Community Center Dr
Weston, WI 54476

320 Ross Ave Ste 1414.17 miles

320 Ross Ave Ste 14
Schofield, WI 54476

734 Ross Ave Facility 1614.38 miles

734 Ross Ave Facility 16
Schofield, WI 54476

5412 Us Highway 10 E15.69 miles

5412 Us Highway 10 E
Stevens Point, WI 54481

2600 Stewart Avenue Suite 15416.69 miles

2600 Stewart Avenue Suite 154
Wausau, WI 54401

2727 Plaza Dr17.11 miles

2727 Plaza Dr
Wausau, WI 54401

5409 Vern Holmes Dr17.15 miles

5409 Vern Holmes Dr
Stevens Point, WI 54482

808 3rd St Ste 10817.27 miles

808 3rd St Ste 108
Wausau, WI 54403

425 Wind Ridge Dr17.43 miles

425 Wind Ridge Dr
Wausau, WI 54401

220 24th St S23.34 miles

220 24th St S
Wisconsin Rapids, WI 54494

2031 Peach St23.47 miles

2031 Peach St
Wisconsin Rapids, WI 54494

130 25th Ave S23.67 miles

130 25th Ave S
Wisconsin Rapids, WI 54495

202 E Upham St23.67 miles

202 E Upham St
Marshfield, WI 54449

1210 Parkwood Dr24.29 miles

1210 Parkwood Dr
Wisconsin Rapids, WI 54494

1000 N Oak Ave24.42 miles

1000 N Oak Ave
Marshfield, WI 54449

1015 Angelus Dr29.71 miles

1015 Angelus Dr
Nekoosa, WI 54457

110 Cedar St30.52 miles

110 Cedar St
Tigerton, WI 54486

1205 O Day St31.62 miles

1205 O Day St
Merrill, WI 54452

601 S Center Ave31.72 miles

601 S Center Ave
Merrill, WI 54452

3333 E Main St31.90 miles

3333 E Main St
Merrill, WI 54452

607 N Sales St32.38 miles

607 N Sales St
Merrill, WI 54452

111 Dehne Dr34.02 miles

111 Dehne Dr
Colby, WI 54421

6493 Valley Circle Rd35.74 miles

6493 Valley Circle Rd
Plainfield, WI 54966

1019 Squire Ct36.03 miles

1019 Squire Ct
Nekoosa, WI 54457

1160 Rome Center Dr36.11 miles

1160 Rome Center Dr
Nekoosa, WI 54457

800 Riverside Dr39.39 miles

800 Riverside Dr
Waupaca, WI 54981

112 E 5th Ave39.56 miles

112 E 5th Ave
Antigo, WI 54409

502 E Elm Dr39.71 miles

502 E Elm Dr
Loyal, WI 54446

701 Grove Ave42.67 miles

701 Grove Ave
Wild Rose, WI 54984

601 Grove Ave42.67 miles

601 Grove Ave
Wild Rose, WI 54984

135 S Gibson St43.81 miles

135 S Gibson St
Medford, WI 54451

102 Cannery St45.16 miles

102 Cannery St
Greenwood, WI 54437

370 S Main St45.75 miles

370 S Main St
Clintonville, WI 54929

216 Sunset Pl46.75 miles

216 Sunset Pl
Neillsville, WI 54456

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing delivers a full spectrum of drug and alcohol testing services through our 38 testing centers in Knowlton, Wisconsin. Our offerings include both DOT and non-DOT urine drug screenings, breath alcohol tests, EtG alcohol assessments, and hair drug exams, catering to individuals, employers, and legal requirements. Rapid result options are available in Knowlton, WI, supplemented by SAMSA-certified lab services; same-day testing is accessible and most facilities are conveniently located close to residences or workplaces. We also provide Occupational Health Testing, Clinical Testing, and Background Checks.

Dial (800) 221-4291 or register via our website. Select a test and a nearby testing center—testing is accessible for personal needs, employee requirements, or other individuals. Our scheduling process is designed to be quick and straightforward; contact our scheduling department or arrange your testing online any time of day. The simplified and intuitive system ensures arranging a drug test near Knowlton is 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.

Knowlton, WI Drug Testing

Drug Testing Services Available at Our Knowlton, WI Labs:

At our Knowlton 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 Knowlton, WI

Knowlton, Wisconsin Statistics

In Knowlton, Marathon County, approximately 7% of arrests in 2022 were drug-related.

Marathon County reported an increase of 15% in opioid overdoses over the past year.

Knowlton accounted for 5% of the county’s total drug arrests in 2021.

Substance use disorder treatment admissions in Knowlton increased by 10% in 2021.

The Knowlton area saw a 12% rise in methamphetamine-related incidents from 2020 to 2022.

In 2022, Knowlton, WI, Marathon County, experienced a 20% increase in drug-related emergency calls.

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 Knowlton, WI & Drug Testing Policies

Employers in Knowlton, WI, have implemented rigorous drug testing policies to maintain workplace safety and productivity. As part of Marathon County's initiatives, many companies adhere to guidelines set by the Wisconsin Department of Workforce Development, requiring pre-employment and random drug screenings.

These policies serve not only to deter drug use but also to identify employees who might need assistance with substance abuse issues, promoting a supportive work environment. Several local businesses collaborate with substance abuse programs, offering employees access to resources and treatment options to aid recovery.

Government Efforts with Drug Problems in Knowlton, WI

The government in Knowlton, WI, has been actively working to curb drug abuse through various initiatives. The county's health department, alongside state health agencies, implements programs focused on prevention and education. Efforts include community workshops and partnerships with local schools to educate youth on the dangers of drug abuse.

Additionally, the U.S. Attorney's Office for the Western District of Wisconsin collaborates with local law enforcement to target drug trafficking networks. Through collaborative efforts, Knowlton aims to reduce drug accessibility and provide support for those struggling with addiction, enhancing public safety and health outcomes.

Local Drug Busts & News in Knowlton, WI

Recent events in Knowlton, WI, highlight ongoing challenges with drug-related activities. Law enforcement has conducted multiple drug busts in the area over the past year, seizing significant quantities of illegal substances. These operations are part of larger efforts by local police and the Wisconsin Department of Justice to dismantle drug networks.

Community involvement in reporting suspicious activities has been crucial in these efforts, leading to a stronger partnership between residents and law enforcement. Public forums and meetings provide updates and engage the community in developing strategies to combat drug problems, reflecting a cohesive approach to addressing drug-related issues in Knowlton.

Occupational Health Services

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

Wisconsin DOT/Non DOT Physicals

Wisconsin Vision Tests

Wisconsin Audiograms

Wisconsin Respirator Fit Tests

Wisconsin Lift Tests

Wisconsin Background Checks

Resources & Citations

Partnership to End Addiction

Substance Abuse and Mental Health Services Administration

Wisconsin Department of Health Services

HOPE Consortium

Marathon County Health Department

Marathon County AOD Partnership

Badger State Recovery

Wisconsin Medical Society

Knowlton Drug Testing

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

Knowlton DOT Drug Testing

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

Knowlton DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Knowlton, WI.

Knowlton Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Knowlton, WI.v

Knowlton Hair Drug Testing

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

Knowlton Alcohol Testing

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

Knowlton Drug Testing Services

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

Knowlton 5 Panel Drug Test

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

Knowlton 10 Panel Drug Test

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

Knowlton On Site Drug Testing

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

Knowlton DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Knowlton, WI 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

Saved My CDL!

Time was running out before my Cdl got downgraded because of a violation I had on clearinghouse. I couldn't find an employer to send me for my return to duty test, but these guys had my test scheduled and done in the same day! They saved my cdl. Thank you again!

Michael Williams - 12/2/2024

they have made my job much easier

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

Smooth and Seamless

I use their service for new hire and DOT employee's. Spoke with Taisha Walker this morning, and she was very helpful. She made the process smooth and seamless.

Christina Galdos - 3/9/2025


(800) 221-4291