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

Drug Testing Locations in Preston, MD

With 39 testing centers in the Preston 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

39 Drug-Testing Centers in Preston

Same-Day Electronic Donor Pass Accepted at All Locations Below

Minutes Away, Test Today

401 Purdy St, Ste 202

9.01 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
401 Purdy St, Ste 202
Easton, MD 21601

8163 Ocean Gtwy

9.14 mi
🕑 Testing Hours: ✓ Walk-in with Electronic Donor Pass
8163 Ocean Gtwy
Easton, MD 21601

8615 Commerce Dr Ste 4

10.60 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
8615 Commerce Dr Ste 4
Easton, MD 21601

219 S Washington St

10.81 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
219 S Washington St
Easton, MD 21601

503 Byrn St, 2nd Fl

12.95 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
503 Byrn St, 2nd Fl
Cambridge, MD 21613

543 N Shipley St Ste F

16.18 mi
🕑 Testing Hours: Mon–Fri: 8:30 AM-3:00 PM✓ Walk-in with Electronic Donor Pass
543 N Shipley St Ste F
Seaford, DE 19973

543 N Shipley St

16.18 mi
🕑 Testing Hours: Mon–Fri: 11:00 AM-1:50 PM✓ Walk-in with Electronic Donor Pass
543 N Shipley St
Seaford, DE 19973

701 Health Services Dr

16.86 mi
🕑 Facility: Mon–Fri: 06:00 AM - 02:00 PM⚡ Drug Screens: Mon–Fri: 07:30 AM - 01:00 PM
701 Health Services Dr
Seaford, DE 19973

808 Middleford Rd, Suite 5

17.20 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
808 Middleford Rd, Suite 5
Seaford, DE 19973

24459 Sussex Hwy Ste 2

17.52 mi
🕑 Testing Hours: Mon–Fri: 8:30 AM-4:00 PM • Sat: 7:30 AM-10:00 AM✓ Walk-in with Electronic Donor Pass
24459 Sussex Hwy Ste 2
Seaford, DE 19973

125 Shoreway Dr

20.40 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
125 Shoreway Dr
Queenstown, MD 21658

5 Chester Plz

23.71 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5 Chester Plz
Chester, MD 21619

2112 Didonato Dr, Ste F

26.40 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2112 Didonato Dr, Ste F
Chester, MD 21619

20930 Dupont Blvd, Ste 201

27.58 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
20930 Dupont Blvd, Ste 201
Georgetown, DE 19947

21305 Berlin Rd Unit 2

27.59 mi
🕑 Testing Hours: Mon–Fri: 11:00 AM-2:00 PM • Sat: 5:30 AM-10:30 AM✓ Walk-in with Electronic Donor Pass
21305 Berlin Rd Unit 2
Georgetown, DE 19947

20930 Dupont Blvd Unit 201

27.59 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
20930 Dupont Blvd Unit 201
Georgetown, DE 19947

503 W Market St Ste 100

27.91 mi
🕑 Testing Hours: Mon–Fri: 6:30 AM-3:00 PM✓ Walk-in with Electronic Donor Pass
503 W Market St Ste 100
Georgetown, DE 19947

2425 N Salisbury Blvd

28.13 mi
🕑 Testing Hours: ✓ Walk-in with Electronic Donor Pass
2425 N Salisbury Blvd
Salisbury, MD 21801

701 E Naylor Mill Rd, Ste G

28.26 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
701 E Naylor Mill Rd, Ste G
Salisbury, MD 21801

550 S Dupont Blvd Ste B

28.51 mi
🕑 Facility: Mon–Fri: 06:00 AM - 02:00 PM⚡ Drug Screens: Mon–Fri: 06:00 AM - 01:00 PM
550 S Dupont Blvd Ste B
Milford, DE 19963

659 S Salisbury Blvd Ste 2

29.12 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
659 S Salisbury Blvd Ste 2
Salisbury, MD 21801

301 Jefferson Ave

29.13 mi
🕑 Testing Hours: Mon–Fri: 9:00 AM-4:00 PM✓ Walk-in with Electronic Donor Pass
301 Jefferson Ave
Milford, DE 19963

975 N Dupont Hwy,

29.40 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
975 N Dupont Hwy,
Milford, DE 19963

100 E Carroll St

29.45 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
100 E Carroll St
Salisbury, MD 21801

712 E Main St,

29.67 mi
🕑 Testing Hours: Mon–Fri: 7:00 AM-11:10 AM & 12:30 PM-3:00 PM • Sat: 7:00 AM-10:30 AM✓ Walk-in with Electronic Donor Pass
712 E Main St,
Salisbury, MD 21804

106 Milford St Ste 501b

30.73 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
106 Milford St Ste 501b
Salisbury, MD 21804

262 Tilghman Rd

30.82 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
262 Tilghman Rd
Salisbury, MD 21804

106 Milford St Ste 303

30.82 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
106 Milford St Ste 303
Salisbury, MD 21804

1655 Woodbrooke Dr Ste 101

30.93 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1655 Woodbrooke Dr Ste 101
Salisbury, MD 21804

1655 Woodbrooke Dr Ste 104

30.93 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1655 Woodbrooke Dr Ste 104
Salisbury, MD 21804

1667 Homewood Landing Rd

35.00 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1667 Homewood Landing Rd
Annapolis, MD 21409

Onsite Only

35.60 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
Onsite Only
Annapolis, MD 21409

1078 S State St Ste 2

36.19 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1078 S State St Ste 2
Dover, DE 19901

514 Washington Ave, Ste 4

36.20 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
514 Washington Ave, Ste 4
Chestertown, MD 21620

1275 S State St

36.22 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
1275 S State St
Dover, DE 19901

1250 W North St

36.37 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1250 W North St
Dover, DE 19904

1102 South Dupont Highway,

36.40 mi
🕑 Testing Hours: Mon–Fri: 6:00 AM-3:00 PM • Sat: 8:00 AM-12:00 PM✓ Walk-in with Electronic Donor Pass
1102 South Dupont Highway,
Dover, DE 19901

1419 Forest Dr Ste 104

36.65 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1419 Forest Dr Ste 104
Annapolis, MD 21403

640 S State St

36.74 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
640 S State St
Dover, DE 19901

Employment, DOT, Court Ordered, Probation, Family

At our 39 Preston, Maryland area locations, Accredited Drug Testing delivers thorough drug and alcohol checks. Both DOT and non-DOT urine tests, breathalyzer exams, EtG alcohol assessments, and hair tests are available for private, corporate, and legal purposes. In Preston, MD, prompt test results can be obtained alongside SAMSA lab certifications. We offer same-day responses, positioning most test sites a mere few minutes from your residence or workplace. Our additional offerings include Occupational Health Testing, Clinical Testing, and Background Verifications.

Dial (800) 221-4291 or schedule online smoothly. Pick your desired test and pinpoint a convenient center—services extend to personal, employee, or third-party testing. Arranging a test is Swift and Simple, reach out to our schedulers or book online anytime. Thanks to our simple and efficient system, organizing a drug screening near Preston is made 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.

How the Drug Testing Process Works in Preston, MD

1

Order Online or Call

Select your test & search nearby Preston 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.

Preston, MD Drug Testing

Drug Testing Services Available at Our Preston, MD Labs:

At our Preston 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

Maryland Drug Testing Laws & Compliance in Preston

SAMHSA Certified • MRO Verified

Accredited Drug Testing provides employer and individual screening in Preston, MD adhering strictly to Md. Code Ann., Health-Gen. § 17-214, federal DOT 49 CFR Part 40 guidelines, and certified SAMHSA laboratory chain-of-custody standards.

Statutory Citation
Md. Code Ann., Health-Gen. § 17-214
Medical Marijuana
Legal
Recreational Cannabis
Legal
Workplace Rights
Zero-Tolerance Protected

Maryland Health-General § 17-214 mandates certified laboratory procedures and applicant notification rules while protecting employer drug-free policies.

Under Md. Code Ann., Health-Gen. § 17-214, employers in Preston 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; Recreational: Legal in Maryland), 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 Preston, 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 Preston and Maryland.

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 Preston, MD

Minutes Away, Same-Day Donor Pass

Accredited Drug Testing operates collection centers strategically positioned throughout Preston 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 Preston Neighborhoods Covered:

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

Major Employment & Commercial Hubs Served:

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

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

Surrounding Areas Served Near Preston

Choptank • Hurlock • Secretary • Matthews • Federalsburg • Barber • East New Market • New Market

Preston, MD 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 Preston.

Test Type & Local Panel Detection Window Common Use Cases in Preston Turnaround Time
5-Panel Urine Screen in Preston →
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 Preston →
Adds Benzodiazepines, Barbiturates, Methadone, Propoxyphene
1 to 7 Days Healthcare Staffing, Corporate Policies & Court Orders 24 to 48 Hours
Hair Follicle Drug Test in Preston →
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 Preston →
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 Preston →
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 Preston →
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 Preston, MD

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 Preston.

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 Preston facility or job site for groups of 25+ employees.

Local Testing Resource Network

More Drug & Alcohol Testing Options in Preston, MD

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

Preston Drug Testing

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

Preston DOT Drug Testing

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

Preston DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Preston, MD.

Preston Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Preston, MD.v

Preston Hair Drug Testing

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

Preston Alcohol Testing

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

Preston Drug Testing Services

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

Preston 5 Panel Drug Test

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

Preston 10 Panel Drug Test

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

Preston On Site Drug Testing

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

Preston DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Preston, MD 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 Maryland, workplace drug testing is governed by statutory guidelines under Md. Code Ann., Health-Gen. § 17-214. Private employers generally operate under a Maryland Health-General § 17-214 guidelines, permitting pre-employment, random, post-accident, and reasonable suspicion testing.
Yes. Employers in Maryland who implement a certified Drug-Free Workplace Program in compliance with Md. Code Ann., Health-Gen. § 17-214 can qualify for insurance premium discounts and enhanced legal protections during workers' compensation claims.
Under Maryland state law compliance standards, state statutes permits employers to maintain zero-tolerance drug-free workplaces. Safety-sensitive positions, DOT-regulated roles, and federal contract compliance remain strictly zero-tolerance across all jurisdictions.
Accredited Drug Testing provides access to 39 certified collection sites in the Preston area, offering urine, hair follicle, breath alcohol, and DOT testing.
While walk-ins are welcome with an electronic donor pass at collection sites across Preston, 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

Excellent service!

Excellent service! Trish went above and beyond to find me a testing site as close to my home as possible. Results were faster than expected, as well. Thanks for your help, Trish and Accredited!

Es Hache - 4/13/2025

Reception is kind and helpful

Reception is kind and helpful , everything quick and simple , best urgent care

Yusuf Narmuradov - 11/19/2024

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


(800) 221-4291