✓ Same-Day Walk-Ins Welcome ✓ Digital Donor Pass in Minutes ✓ No Doctor Order Required ✓ SAMHSA-Certified Labs

Drug Testing Locations in Knox, WI

With 27 testing centers in the Knox area, we offer drug and alcohol testing for employment, probation and DOT requirements. Additional services include DOT consortium enrollment, DNA Testing and background checks. Order your tests and services online or call (800) 221-4291.

Urine (5, 10, 12, 14-Panel) Hair Follicle (90-Day) DOT Drug & Alcohol Court & Probation Oral Fluid / Saliva EtG Alcohol
🕑 Collection Site Hours: Monday – Friday: 8:00 AM – 4:00 PM • ✓ Walk-in with Electronic Donor Pass • Saturday – Sunday: Closed

27 Drug-Testing Centers in Knox

Same-Day Electronic Donor Pass Accepted at All Locations Below

Minutes Away, Test Today

1511 Railroad Ave

9.57 mi
🕑 Testing Hours: Mon–Fri: 7:00 AM-7:00 PM✓ Walk-in with Electronic Donor Pass
1511 Railroad Ave
Prentice, WI 54556

1121 Hwy 102

16.99 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-8:00 PM • Sat:,Sun: 9:00 AM-4:00 PM✓ Walk-in with Electronic Donor Pass
1121 Hwy 102
Rib Lake, WI 54470

625 Peterson Ave

17.08 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
625 Peterson Ave
Phillips, WI 54555

401 W Mohawk Dr

17.78 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-4:00 PM • Sat: 8:00 AM-11:00 AM✓ Walk-in with Electronic Donor Pass
401 W Mohawk Dr
Tomahawk, WI 54487

104 Trinity Dr

19.04 mi
🕑 Testing Hours: M-Th 7:00 AM-4:30 PM • F 7:00 AM-3:30 PM✓ Walk-in with Electronic Donor Pass
104 Trinity Dr
Phillips, WI 54555

9601 Townline Rd

29.98 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
9601 Townline Rd
Minocqua, WI 54548

240 Maple St

30.27 mi
🕑 Testing Hours: Mon–Fri: 10:00 AM-4:00 PM✓ Walk-in with Electronic Donor Pass
240 Maple St
Woodruff, WI 54568

50 Sherry Ave

31.32 mi
🕑 Testing Hours: Mon–Fri: 6:30 AM-2:30 PM✓ Walk-in with Electronic Donor Pass
50 Sherry Ave
Park Falls, WI 54552

135 S Gibson St

31.35 mi
🕑 Testing Hours: ✓ Walk-in with Electronic Donor Pass
135 S Gibson St
Medford, WI 54451

98 Sherry Ave

31.37 mi
🕑 Testing Hours: Mon–Fri: 6:20 AM-12:00 PM & 12:30 PM-3:00 PM✓ Walk-in with Electronic Donor Pass
98 Sherry Ave
Park Falls, WI 54552

500 Birch St

31.58 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-6:00 PM✓ Walk-in with Electronic Donor Pass
500 Birch St
Park Falls, WI 54552

607 N Sales St

32.34 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
607 N Sales St
Merrill, WI 54452

601 S Center Ave

32.55 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
601 S Center Ave
Merrill, WI 54452

1205 O Day St

32.64 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1205 O Day St
Merrill, WI 54452

1020 Kabel Ave

33.18 mi
🕑 Testing Hours: Mon–Fri: 7:00 AM-6:00 PM✓ Walk-in with Electronic Donor Pass
1020 Kabel Ave
Rhinelander, WI 54501

3333 E Main St

33.32 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3333 E Main St
Merrill, WI 54452

5818 Fire Ln

41.41 mi
🕑 Testing Hours: Mon–Fri: 7:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
5818 Fire Ln
Rhinelander, WI 54501

320 E Main St

43.83 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
320 E Main St
Gilman, WI 54433

111 Dehne Dr

44.94 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
111 Dehne Dr
Colby, WI 54421

425 Wind Ridge Dr

45.28 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
425 Wind Ridge Dr
Wausau, WI 54401

2727 Plaza Dr

45.35 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2727 Plaza Dr
Wausau, WI 54401

2600 Stewart Avenue Suite 154

45.78 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2600 Stewart Avenue Suite 154
Wausau, WI 54401

808 3rd St Ste 108

46.35 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
808 3rd St Ste 108
Wausau, WI 54403

201 Hospital Rd

48.07 mi
🕑 Testing Hours: Mon–Fri: 9:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
201 Hospital Rd
Eagle River, WI 54521

906 College Ave W Attn Lab

49.12 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
906 College Ave W Attn Lab
Ladysmith, WI 54848

900 College Ave W

49.76 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
900 College Ave W
Ladysmith, WI 54848

320 Ross Ave Ste 14

49.78 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
320 Ross Ave Ste 14
Schofield, WI 54476

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing delivers a full array of drug and alcohol testing solutions across our 27 testing sites around Knox, Wisconsin. We perform both DOT and non-DOT urine tests, breathalyzer alcohol screenings, EtG alcohol analyses, and hair drug tests suitable for personal, business, or legal requirements. Our Knox, WI locations provide quick results testing and SAMSA certified lab evaluations, with same-day services accessible. Most locations are conveniently situated near your residence or workplace. Our additional offerings encompass Occupational Health Testing, Clinical Evaluations, and Background Screening.

Contact us at (800) 221-4291 or register on our website. Choose your test and find a nearby center—ideal for yourself, employees, or others. Scheduling is a breeze; engage our scheduling team or book your test online 24/7. Our efficient, intuitive system ensures stress-free test arrangements near Knox.

* 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.

How the Drug Testing Process Works in Knox, WI

1

Order Online or Call

Select your test & search nearby Knox collection sites.

2

Get Donor Pass

Receive your donor pass by email or SMS immediately.

3

Visit Collection Center

Walk in with donor pass & photo ID. No appointment needed.

4

Fast Results

Secure results delivered confidentially in 24-48 hours.

Knox, WI Drug Testing

Drug Testing Services Available at Our Knox, WI Labs:

At our Knox 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.

Official Legal & Regulatory Framework

Wisconsin Drug Testing Laws & Compliance in Knox

SAMHSA Certified • MRO Verified

Accredited Drug Testing provides employer and individual screening in Knox, WI adhering strictly to Wis. Stat. § 108.04(5r), federal DOT 49 CFR Part 40 guidelines, and certified SAMHSA laboratory chain-of-custody standards.

Statutory Citation
Wis. Stat. § 108.04(5r)
Medical Marijuana
Legal (Medical)
Recreational Cannabis
Prohibited
Workplace Rights
Zero-Tolerance Protected

Wisconsin law allows employers to test job candidates and current staff, disqualifying individuals from unemployment benefits following verified positive tests.

Under Wis. Stat. § 108.04(5r), employers in Knox may institute comprehensive drug-free workplace programs including:

  • Pre-Employment Screening: Conditional job offer testing for all applicants.
  • Reasonable Suspicion Testing: Objective, documented behavioral signs of impairment.
  • Post-Accident Testing: Mandatory screening following workplace injuries or property damage.
  • Random Testing: Unannounced selection for safety-sensitive roles and machinery operators.
  • Workers' Comp Incentives: Verified testing programs provide premium discounts on state workers' compensation insurance policies.

While cannabis statutes continue evolving across the United States (Medical: Legal (Medical); Recreational: Prohibited in Wisconsin), employers retain the legal prerogative to prohibit substance impairment on job premises, during operational shifts, and while operating company vehicles.

Federal regulations, Department of Transportation (DOT) mandates, and safety-sensitive positions strictly prohibit marijuana use regardless of state cannabis status. ADT provides both standard THC screening and non-THC customized drug panels for private employers wishing to adapt to state-specific hiring preferences.

For commercial drivers, maritime operators, aviation crews, and transit personnel operating in Knox, all testing follows rigorous Department of Transportation (DOT) standards governed by 49 CFR Part 40:

  • Federal 5-Panel Regulated Urine Screen: Tested for Marijuana, Cocaine, Amphetamines/Methamphetamines, Opioids (Codeine, Morphine, Heroin, Hydrocodone, Hydromorphone, Oxycodone, Oxymorphone), and PCP.
  • SAMHSA Accredited Laboratories: Zero compromise on testing accuracy with gas chromatography/mass spectrometry (GC/MS) confirmation.
  • Medical Review Officer (MRO): Every non-negative specimen is reviewed by a licensed physician MRO before reporting.
  • FMCSA Clearinghouse Reporting: Real-time reporting of verified positive tests and refusals to test into the federal driver clearinghouse database.

Accredited Drug Testing provides legally admissible drug and alcohol screening for county court dockets, child custody hearings, probation requirements, and pretrial diversion programs throughout Knox and Wisconsin.

All specimens undergo observed or witnessed collection procedures when ordered by the court, accompanied by rigorous Federal Chain of Custody Forms (CCF). Turnaround time is rapid, and official certificates of analysis can be forwarded directly to your attorney, court case officer, or probation supervisor upon release.

Hyper-Local Proximity Coverage

Neighborhoods & Service Districts in Knox, WI

Minutes Away, Same-Day Donor Pass

Accredited Drug Testing operates collection centers strategically positioned throughout Knox to ensure fast donor access with minimal drive times. Walk-ins are welcomed with an immediate electronic donor pass across all major neighborhoods and transit corridors:

Key Knox Neighborhoods Covered:

● Downtown Knox ● Central Business District ● North Knox Commercial Corridor ● South Knox Industrial Park ● East Knox Metro Area ● West Knox Trade Center ● Medical & Healthcare District ● Airport / Logistics Corridor

Major Employment & Commercial Hubs Served:

Knox Main Street Commercial District • Knox Regional Trade Center • County Industrial Parkway • Metro Healthcare & Occupational Medical Corridor

Located anywhere in Knox? Receive your electronic pass in under 5 minutes.
Order Test Online →

Surrounding Areas Served Near Knox

Brantwood • Tripoli • Spirit • Peru • Prentice • Hill • Worcester • Emery

Knox, WI Drug & Alcohol Test Panels & Detection Windows

Select a test panel below to review specific drug compounds screened, detection timeframes, and instant electronic pass registration in Knox.

Test Type & Local Panel Detection Window Common Use Cases in Knox Turnaround Time
5-Panel Urine Screen in Knox →
THC, Cocaine, Basic Opiates, Amphetamines, PCP
1 to 5 Days Pre-Employment, Workplace Safety & Non-DOT Randoms 24 to 48 Hours
10-Panel Urine Screen in Knox →
Adds Benzodiazepines, Barbiturates, Methadone, Propoxyphene
1 to 7 Days Healthcare Staffing, Corporate Policies & Court Orders 24 to 48 Hours
Hair Follicle Drug Test in Knox →
Long-term historical pattern analysis (90-day window)
Up to 90 Days Child Custody, Legal Defense & Executive Screening 3 to 5 Business Days
DOT Drug & Alcohol Test in Knox →
49 CFR Part 40 compliant with CCF & MRO verification
1 to 5 Days FMCSA, FAA, FRA, FTA, USCG Regulated Drivers & Crew 24 to 48 Hours
ETG & Breath Alcohol in Knox →
Evidential breath testing or 80-hour urine EtG metabolite
Breath: 0–12 Hrs
EtG: Up to 80 Hrs
Zero-Tolerance Workplace, Post-Accident & Probation Immediate to 48 Hours
DOT Physical Exam in Knox →
FMCSA NRCME certified medical examiner card (Form MCSA-5876)
1 to 2 Year Card Commercial Driver License (CDL) Medical Certification Same-Day Medical Card
Full-Service Testing Solutions

Occupational Health & Specialized Screening in Knox, WI

Beyond standard urine screening, Accredited Drug Testing delivers end-to-end occupational medical solutions, DOT credentialing, court-admissible forensic testing, and employer background compliance.

NRCME Certified

DOT Physicals & Medical Cards

FMCSA-compliant examinations conducted by certified medical examiners. Instant driver medical certificate renewal across Knox.

AABB Accredited

Court Legal DNA & Paternity

100% court-admissible legal paternity, maternity, sibling, and grandparentage testing with strict chain of custody for family court.

FCRA Compliant

Background Checks & MVR

Comprehensive pre-employment screening, nationwide criminal history searches, and Motor Vehicle Records (MVR) for driver compliance.

Long Detection Window

90-Day Hair Follicle Drug Test

Tamper-resistant 90-day historical substance screening. Preferred by family courts, custody attorneys, and zero-tolerance employers.

Instant & Lab Confirmed

Breath Alcohol & 80-Hr EtG

Evidential breath alcohol testing (BAT) and 80-hour EtG urine/hair metabolite analysis for probation monitoring and workplace safety.

We Come to You

Mobile On-Site Group Testing

Certified mobile collection technicians dispatched directly to your Knox facility or job site for groups of 25+ employees.

Local Testing Resource Network

More Drug & Alcohol Testing Options in Knox, WI

Need immediate walk-in service in Knox? View our Walk-In Drug Testing Near Me in Knox, WI facility guide or order an instant electronic donor pass online.

Knox Drug Testing

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

Knox DOT Drug Testing

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

Knox DNA Testing

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

Knox Industry Training

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

Knox Hair Drug Testing

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

Knox Alcohol Testing

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

Knox Drug Testing Services

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

Knox 5 Panel Drug Test

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

Knox 10 Panel Drug Test

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

Knox On Site Drug Testing

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

Knox DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Knox, 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

In Wisconsin, workplace drug testing is governed by statutory guidelines under Wis. Stat. § 108.04(5r). Private employers generally operate under a Wisconsin Statute § 108.04 guidelines, permitting pre-employment, random, post-accident, and reasonable suspicion testing.
Yes. Employers in Wisconsin who implement a certified Drug-Free Workplace Program in compliance with Wis. Stat. § 108.04(5r) can qualify for insurance premium discounts and enhanced legal protections during workers' compensation claims.
Under Wisconsin state law compliance standards, state statutes permits zero-tolerance workplace drug testing policies. Safety-sensitive positions, DOT-regulated roles, and federal contract compliance remain strictly zero-tolerance across all jurisdictions.
Accredited Drug Testing provides access to 27 certified collection sites in the Knox area, offering urine, hair follicle, breath alcohol, and DOT testing.
While walk-ins are welcome with an electronic donor pass at collection sites across Knox, registering your test online or calling (800) 221-4291 prior to visiting guarantees rapid priority specimen collection with an instant barcode pass.
Negative drug and alcohol test results are typically released within 24 to 48 hours of specimen processing. Any non-negative screenings undergo confirmatory GC/MS or LC/MS testing and licensed Medical Review Officer (MRO) verification within 3 to 5 business days.

Customer Reviews

Fast and easy

It was fast and easy a pleasure to talk to the customer service people great service

Peter Villegas - 1/19/2025

Very professional and very quick

Very professional and very quick service to schedule appointments! I am pleased with the services and would definitely recommend using them for any drug testing needs!

Carrie Feerick - 4/19/2025

Had very fast and good service

Had very fast and good service, was able to get an appointment same day with the nearest facility. My questions were answered thoroughly but quick. Definitely recommend

Jacob Matzke - 11/19/2024

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

Everything was great

Everything was great, the staff was very polite. Thank you.

Olga Petrova - 9/19/2024

Unbelievably fast and Easy

Unbelievably fast and Easy, I wont be using Any other provider from now on.

Ren Wisby - 4/19/2025

test was quick and easy

Company New Hire Employee Process for DOT Drug test was quick and easy. No need to make appt. All employee had to do is show prepaid qr code I sent to employee show ID and was set. Would Recommend.

Maria Lopez - 11/19/2024

Pretty Straightforward

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

Fast and efficient service

Fast and efficient service for employers wanting to do pre employment drug screening that meets DOT requirements!!

Mary Thomas - 4/5/2025

Hassle Free Experience

It was easy to make the arrangements to get to someone in regards to renewing my DOT medical certificate. They took care of everything over the phone which made my experience hassle free. I will definitely be using them again and you should too.

Jim Raymond - 10/18/2024


(800) 221-4291