Drug & Alcohol Testing Near Me - Katy, TX

Accredited Drug Testing provides drug and alcohol testing services at multiple locations throughout your local area.  

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

38 Drug-Testing Centers in Katy

Minutes Away, Test Today

25765 Katy Fwy0.74 miles

25765 Katy Fwy
Katy, TX 77494

23900 Katy Fwy2.24 miles

23900 Katy Fwy
Katy, TX 77494

21929 Katy Fwy4.24 miles

21929 Katy Fwy
Katy, TX 77450

10705 Spring Green Blvd Ste 6004.59 miles

10705 Spring Green Blvd Ste 600
Katy, TX 77494

21700 Kingsland Blvd4.69 miles

21700 Kingsland Blvd
Katy, TX 77450

21660 Kingsland Blvd4.73 miles

21660 Kingsland Blvd
Katy, TX 77450

21238 Kingsland Blvd5.07 miles

21238 Kingsland Blvd
Katy, TX 77450

1844 Snake River Rd Ste A5.97 miles

1844 Snake River Rd Ste A
Katy, TX 77449

6501 S Fry Rd Ste 10005.98 miles

6501 S Fry Rd Ste 1000
Katy, TX 77494

952 S Fry Rd,6.30 miles

952 S Fry Rd,
Katy, TX 77450

19728 Saums Rd Ste 1796.37 miles

19728 Saums Rd Ste 179
Houston, TX 77084

19450 Katy Fwy6.83 miles

19450 Katy Fwy
Houston, TX 77094

5510-a W Grand Pkwy S8.32 miles

5510-a W Grand Pkwy S
Richmond, TX 77406

7101 W Grand Pkwy S8.32 miles

7101 W Grand Pkwy S
Richmond, TX 77407

17738 Sunset River Ln9.94 miles

17738 Sunset River Ln
Houston, TX 77084

16125 Cairnway Dr Ste 10611.32 miles

16125 Cairnway Dr Ste 106
Houston, TX 77084

9110 Barker Cypress Rd11.90 miles

9110 Barker Cypress Rd
Cypress, TX 77433

1398 Eldridge Pkwy Ste 11312.04 miles

1398 Eldridge Pkwy Ste 113
Houston, TX 77077

14770 Memorial Dr Ste 10012.78 miles

14770 Memorial Dr Ste 100
Houston, TX 77079

12345 Katy Fwy13.05 miles

12345 Katy Fwy
Houston, TX 77079

14045 Memorial Dr14.03 miles

14045 Memorial Dr
Houston, TX 77079

2550 Gray Falls Dr Ste 12014.27 miles

2550 Gray Falls Dr Ste 120
Houston, TX 77077

12121 Richmond Ave Ste 124,14.35 miles

12121 Richmond Ave Ste 124,
Houston, TX 77082

8100 Highway 6 N Ste E14.36 miles

8100 Highway 6 N Ste E
Houston, TX 77095

11211 Katy Fwy14.61 miles

11211 Katy Fwy
Houston, TX 77079

11807 Westheimer Rd Ste 56014.63 miles

11807 Westheimer Rd Ste 560
Houston, TX 77077

25801 Highway 29014.73 miles

25801 Highway 290
Cypress, TX 77429

1705 Jackson St14.78 miles

1705 Jackson St
Richmond, TX 77469

1511 Upland Dr Ste 10014.80 miles

1511 Upland Dr Ste 100
Houston, TX 77043

1601 Main St Ste 40514.90 miles

1601 Main St Ste 405
Richmond, TX 77469

1601 Main St Ste 208,14.90 miles

1601 Main St Ste 208,
Richmond, TX 77469

13811 Charterhouse Way15.03 miles

13811 Charterhouse Way
Sugar Land, TX 77498

2929 Woodland Park Dr15.05 miles

2929 Woodland Park Dr
Houston, TX 77082

13141 Fm 1960 Rd W Ste 50015.34 miles

13141 Fm 1960 Rd W Ste 500
Houston, TX 77065

11621a Katy Fwy15.43 miles

11621a Katy Fwy
Houston, TX 77079

4114 Avenue H15.71 miles

4114 Avenue H
Rosenberg, TX 77471

3926 Avenue H Ste 1115.77 miles

3926 Avenue H Ste 11
Rosenberg, TX 77471

17410 Northwest Fwy15.98 miles

17410 Northwest Fwy
Houston, TX 77040

Drug Testing Near Me

Searching for nearby drug testing services? In the state of Katy, TX and across the nation, Accredited Drug Testing, Inc. stands as a highly regarded provider of same-day drug and alcohol testing, boasting a comprehensive network of over 20,000 locations nationwide. Whether the requirement is for DOT-compliant tests, court-mandated screenings, pre-employment drug tests, or personal drug assessments, we streamline the scheduling process, ensuring it is both swift and confidential. Utilizing certified laboratories and collection sites, we guarantee precise and trustworthy outcomes that adhere to federal and state regulatory standards. To locate a convenient drug testing facility near you, simply dial (800) 221-4291 or use our online scheduling platform available 24/7. When prioritizing safety, compliance, and assurance, Accredited Drug Testing consistently delivers punctual and dependable results every time.

Drug and Alcohol Testing Options

Urine Drug Testing Available Panels
5 Panel Drug Test (DOT/NON DOT)
5 Panel + Alcohol Drug Test
5 Panel + ETG Alcohol Drug Test
10 Panel Drug Test
10 Panel + ETG Alcohol Drug Test
12 Panel Drug Test
Hair Drug Testing Available Panels
5 Panel Hair Drug Test
5 Panel + ETG Hair Drug Test
10 Panel Hair Drug Test
12 Panel Hair Drug Test
14 Panel Hair Drug Test
16 Panel Hair Drug Test
Alcohol Drug Testing Available Panels
Alcohol Urine Drug Test
ETG Alcohol Test (Urine)
Breath Alcohol Test
Blood Alcohol Test
Peth Alcohol Blood Test
ETG Alcohol Test (Hair)

Customized Testing Options Available l Discounts available for Bulk Purchases l Onsite Drug Testing Services

How Urine Drug Testing Works

Urine drug testing reigns as the most prevalent screening technique nationwide and is the exclusive test type sanctioned for DOT-regulated drug testing per 49 CFR Part 40. This assessment method detects recent substance use by analyzing urine samples for drugs, their metabolites, or alcohol traces. The entire process is designed to be standardized, confidential, and to yield precise, legally viable results for employers, individuals, and court directives.

Testing Methods & Collection Process

  • 1. Donor Identity Verification: Donors must present valid governmental identification and complete the necessary chain-of-custody signatures before testing can proceed.
  • 2. Secure Collection Environment: Urine samples are obtained in a controlled restroom space to hinder tampering, with measures like restricting personal items, securing water sources, and dyeing toilet water.
  • 3. Chain of Custody Documentation: The specimen's integrity is protected via a federally recognized Chain of Custody Form (CCF) from collection through lab analysis.
  • 4. Temperature & Validity Checks: Immediately post-collection, collectors verify the specimen's temperature and physical appearance. Labs conduct validity tests, including measurements of creatinine, pH, specific gravity, and adulterants.
  • 5. DOT Split Specimen: DOT urine tests are divided into two samples; Bottle A undergoes initial analysis while Bottle B is reserved for any retesting requests.
  • 6. Laboratory Screening & Confirmation: Specimens undergo dual-stage analysis in SAMHSA-certified labs with initial immunoassay screenings to identify drug classes followed by GC/MS or LC/MS technology for precise drug/metabolite identification.
  • 7. MRO Verification: A licensed Medical Review Officer evaluates non-negative outcomes to ensure accuracy and discusses potential medical explanations with donors before releasing final results.

How Long Do Urine Test Results Take?

  • Instant Urine Test: Same-day negative results; positives sent for lab confirmation within 24-72 hours.
  • Lab-Based Urine Test: 24-48 hours for most negatives.
  • DOT Drug Test: Completion can span 1-3 business days, influenced by MRO review and donor accessibility.
  • Urine EtG Alcohol Test: Typically processed over 24-48 hours.

An extended timeframe may be essential in cases of shy bladders, invalid samples, or necessitated lab verification or donor communication.

Benefits of Urine Drug & Alcohol Testing

  • It remains the sole DOT recognized method for regulated testing.
  • Effective in detecting recent usage, suitable for employment settings and post-incident scenarios.
  • Affordable with swift processing time.
  • Broadly acknowledged by legal courts, employers, and governmental bodies.
  • Instant testing alternatives for rapid diagnostic evaluations.
  • High precision with GC/MS or LC/MS validation technology utilized.

Limitations of Urine Drug & Alcohol Testing

  • Short detection periods (1-7 days for most substances).
  • Possibility of tampering absent stringent security protocols.
  • Incapable of reflecting extended or historic usage patterns.
  • Requires restroom amenities and specific collection methodologies.
  • Standard tests fail to detect alcohol without EtG/EtS testing.

Despite inherent limitations, urine testing remains a staple choice across the nation for drug and alcohol screenings.

How Hair Drug Testing Works

Hair analysis for drugs and alcohol stands out as a dependable lab approach, ideal for assessing a person's substance usage over an extended period. Moving past the immediate detection found in urine testing, hair testing offers a comprehensive 90-day analysis window by scrutinizing metabolites found within hair strands. This method holds significant value in workplace drug policies, legal disputes, custody battles, and settings demanding an extensive view of an individual's history of substance involvement within Katy, TX.

Testing Methods & Collection Process

1. Donor Identity Verification

Data integrity initiates when the donor cues valid ID and signs necessary consent forms, maintaining proper chain-of-custody.

2. Hair Collection Procedure

A trained specialist collects a small sample of hair, usually around 100-120 strands, cut close to the scalp. While the top of the head is prioritized, body hair serves as an alternative when necessary. The method is pain-free and completed under supervision.

3. Chain of Custody Documentation

Meticulous handling is documented in the Hair Drug Test Custody and Control Form, ensuring the whole procedure, from collection to examination, meets legal mandates.

4. Laboratory Preparation & Analysis

Under rigorous forensic precision in labs:

  • Decontamination: Washing to clear surface residues.
  • Cutting/Grinding: Segmenting for extraction readiness.
  • Extraction: Metabolite isolation from hair.

The specimen surpasses precise lab scrutiny:

  • Initial Screening - Detects drug categories via immunoassay analyses.
  • Confirmation Testing - Verifies specific drugs/metabolites using GC/MS or LC/MS.

5. Metabolite Detection

With metabolites ensconced as the hair grows, a steadfast record forms, presenting challenges to attempts at tampering it's a method resilient against deception.

6. MRO Review

Competent Medical Review Officers critically assess non-negative results, offer medical insight, and assert authenticity in delivering final results.

How Long Do Hair Test Results Take?

  • Standard Hair Test: Completion within 2-3 business days post sample delivery to the laboratory.
  • Complex Panels or Alcohol Testing (EtG/FAEE): Take up to 3-5 business days based on testing complexity.

Despite extending timelines than urine methods, hair examination stakes a claim in delivering unfailing results, proving indispensable for thorough substance history surveillance.

Benefits of Hair Drug & Alcohol Testing

  • 90-day coverage exposes sustained usage patterns.
  • Resists evasion extremely hard to alter or fake.
  • Establishes records of ongoing or sporadic use cessation.
  • Vital to legal matters, custody evaluation, and jurisdictional programs.
  • Promotes easy, quick sample collection.
  • Verification durability through GC/MS or LC/MS.

Limitations of Hair Drug & Alcohol Testing

  • Limited in discerning recent substance intake (first 5-7 days).
  • Higher overall cost alongside urine or saliva analyses.
  • Body hair cannot specify concrete timelines post-substance use.
  • Substance incorporation may vary per hair type and growth.
  • Not recognized by DOT testing stipulations.

While certain drawbacks exist, hair testing upholds its position as a proactive tool for long-lasting substance auditing, adored by employers, legal experts, and individuals seeking fool-proof, tamper-free viability studies.

Alcohol & Drug Testing-How Each Method Works

In Katy, TX, Accredited Drug Testing provides an extensive catalog of alcohol and drug screening alternatives meticulously tailored to meet the diverse needs across employer settings, DOT regulations, legal cases, and personal testing scenarios. Grasping the functionalities of each testing option ensures that users receive optimally suitable, credible results while achieving unfaltering compliance with federal guidelines and Katy, TX state regulations. These tests are conducted through our expansive network, accredited laboratories, and seasoned Medical Review Officers.

Alcohol Urine Drug Test

An alcohol urine test promptly identifies recent alcohol consumption through ethanol metabolites present in urine. This type is popular for workplace investigations, satisfying court urgencies, or post-incident circumstances. Despite not measuring real-time impairment, it serves a brief detection duration, spanning a few hours, providing a swift and economical screening proposition.

ETG Alcohol Test (Urine)

The EtG (Ethyl Glucuronide) urine test recognizes alcohol usage as far back as 80 hours post-consumption due to its sensitivity. With EtG being a direct metabolite of ethanol, this method is extensively adopted by courts, rehab programs, and compliance observation bodies, offering a broader window of detection than traditional urine testing, praised for its precision and dependability.

Breath Alcohol Test

Employment of a breath alcohol test facilitates real-time impairment assessment by reviewing alcohol concentrations within deep lung air. Managed using DOT-certified breath alcohol devices, these tests yield instantaneous results, defensible legally, and are imperative for DOT personnel. They are dominant in workplace regulations, post-incident protocols, and reasonable suspicion circumstances.

Blood Alcohol Test

Carrying unparalleled accuracy, a blood alcohol test ascertains ethanol concentration directly within the bloodstream. It's a sought-after choice for hospitals, law enforcement, and legal agencies, particularly in DUI examinations, emergency caregiving, and pivotal legal investigations.

PEth Alcohol Blood Test

PEth (Phosphatidylethanol) blood tests detect persistent or heavy alcohol intake by identifying alcohol-specific biomarkers embedded in red blood cells. This unmistakably reliable technique spots usage up to 2-3 weeks prior, making it a key resource in family law proceedings, observational programs, treatment facilities, and pre-employment scrutiny for safety-intensive industries.

ETG Alcohol Test (Hair)

An EtG hair alcohol test offers a comprehensive 90-day detection span by focusing on alcohol metabolites rooted within the hair shaft. By identifying consumption patterns over prolonged periods, it serves courts, child custody cases, and sustained supervision programs, upholding stability and accuracy.

Through astute guidance, recognized laboratories, and seamless scheduling, Accredited Drug Testing ensures each method of alcohol screening meets high standards of defensibility, clarity, and compliance, empowering individuals and organizations in Katy, TX to remain well-informed, safeguarded, and wholly compliant with the regulatory statutes.


Accredited Drug Testing provides nationwide drug and alcohol screening solutions, including urine, hair, EtG, PEth, and breath alcohol testing. Backed by SAMHSA-certified laboratories, DOT 49 CFR Part 40 compliance, and scientifically validated testing technology, our services ensure accurate, defensible, and confidential results for employers, courts, and individuals.

Frequently Asked Questions

Urine tests detect recent use and are the only option approved for DOT testing under 49 CFR Part 40. Hair tests provide a 90-day detection window per the Society of Hair Testing (SoHT). Alcohol testing options, EtG, breath, blood, or PEth. These tests can identify recent use, impairment, or long-term drinking behavior depending on the method.

Urine: 24 - 48 hrs for negatives (SAMHSA guidelines).
Hair: 2 - 5 business days due to multi-step forensic processing (SoHT).
Breath Alcohol: Immediate results using NHTSA-approved EBT devices.
PEth: 3 - 5 days based on forensic toxicology studies.

Lab confirmation using GC/MS or LC/MS is the gold standard per SAMHSA & DOT.
Hair testing is highly tamper-resistant (SoHT).
PEth is considered the most reliable marker of repeated drinking (Journal of Analytical Toxicology).

No. DOT-regulated urine tests require validity checks and chain-of-custody documentation (49 CFR Part 40). Hair tests undergo decontamination and metabolite extraction (SoHT), making them extremely difficult to adulterate.

EtG urine detects alcohol for up to 80 hours (NIH/SAMHSA studies). EtG hair detects chronic alcohol consumption for up to 90 days (SoHT alcohol guidelines).

5 Panel DOT:49 CFR Part 40. Expanded non-DOT panels add benzodiazepines, barbiturates, methadone, oxycodone, MDMA, fentanyl, and more (SAMHSA forensic panel standards).

PEth blood testing identifies long-term and heavy alcohol use for 2 - 4 weeks. Used in child custody, treatment monitoring, and professional compliance programs (CDC & Journal of Analytical Toxicology).

Hair testing does not detect drug use within the past 5 - 7 days. It identifies long-term or repetitive use patterns per SoHT standards.

Yes. Results follow strict chain-of-custody procedures, DOT/SAMHSA requirements, GC/MS or LC/MS confirmation, and MRO review; making them acceptable in court, DOT, and legal settings.

Yes. Accredited Drug Testing offers same-day appointments at 20,000+ locations nationwide, instant testing options, and onsite employer testing with bulk discounts.

Customer Reviews

This is by far the easiest

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

phone support has been excellent

I have used ADT several times. Their phone support has been excellent, both when putting in the orders and when asking for help to interpret results.

Tee Ess - 12/19/2024

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

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

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


Sources


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(800) 221-4291