Drug Testing Services - Knollwood, TX

Urine | Hair | DOT | Oral Fluid | Alcohol/ETG | Occupational Health

34 Drug Test Service Centers in Knollwood

Minutes Away, Test Today

3601 N Calais St1.31 miles

3601 N Calais St
Sherman, TX 75090

2915 N Travis St Ste 21.67 miles

2915 N Travis St Ste 2
Sherman, TX 75092

2500 N Travis St1.97 miles

2500 N Travis St
Sherman, TX 75092

913 Cottonwood Dr2.20 miles

913 Cottonwood Dr
Sherman, TX 75090

2001 N Loy Lake Rd Ste M2.27 miles

2001 N Loy Lake Rd Ste M
Sherman, TX 75090

501 N Highland Ave Ste 3003.70 miles

501 N Highland Ave Ste 300
Sherman, TX 75092

1010 La Salle Dr, Suite 2 Eb3.74 miles

1010 La Salle Dr, Suite 2 Eb
Sherman, TX 75090

3126 W Fm 1205.46 miles

3126 W Fm 120
Denison, TX 75020

954 W Van Alstyne Parkway18.60 miles

954 W Van Alstyne Parkway
Van Alstyne, TX 75495

398 N 49th Ave24.24 miles

398 N 49th Ave
Durant, OK 74701

204 N 10th St24.71 miles

204 N 10th St
Durant, OK 74701

4302 County Road 464024.90 miles

4302 County Road 4640
Trenton, TX 75490

2201 N State Highway 12125.07 miles

2201 N State Highway 121
Bonham, TX 75418

1807 W University Blvd25.31 miles

1807 W University Blvd
Durant, OK 74701

1800 W University Blvd25.32 miles

1800 W University Blvd
Durant, OK 74701

1610 W University Blvd25.41 miles

1610 W University Blvd
Durant, OK 74701

1706 Delivery Ln25.89 miles

1706 Delivery Ln
Durant, OK 74701

109 E Main St26.95 miles

109 E Main St
Bokchito, OK 74726

504 Lipscomb St27.09 miles

504 Lipscomb St
Bonham, TX 75418

901 S 5th Ave28.73 miles

901 S 5th Ave
Madill, OK 73446

207 E Taliaferro St29.02 miles

207 E Taliaferro St
Madill, OK 73446

1625 N Grand Ave29.78 miles

1625 N Grand Ave
Gainesville, TX 76240

426 N Grand Ave29.91 miles

426 N Grand Ave
Gainesville, TX 76240

800 Hwy 8230.21 miles

800 Hwy 82
Gainesville, TX 76240

910 W University Dr32.72 miles

910 W University Dr
Mckinney, TX 75069

1515 Heritage Dr, Ste 10032.93 miles

1515 Heritage Dr, Ste 100
Mckinney, TX 75069

809 N Central Expy33.53 miles

809 N Central Expy
Mckinney, TX 75070

130 S Central Expy33.89 miles

130 S Central Expy
Mckinney, TX 75070

300 Wanda St34.21 miles

300 Wanda St
Marietta, OK 73448

7145 N George Bush Hwy35.63 miles

7145 N George Bush Hwy
Garland, TX 75044

1920 W Eldorado Pkwy35.79 miles

1920 W Eldorado Pkwy
Mc Kinney, TX 75069

2810 S Hardin Blvd36.03 miles

2810 S Hardin Blvd
Mckinney, TX 75070

4510 Medical Center Dr, Ste 31036.60 miles

4510 Medical Center Dr, Ste 310
Mckinney, TX 75069

4510 Medical Center Dr Ste 21236.60 miles

4510 Medical Center Dr Ste 212
Mckinney, TX 75069

Employers | Individuals | Families

Accredited Drug Testing provides comprehensive drug and alcohol testing services to promote workplace safety, meet compliance requirements, and support legal or personal needs for testing. Drug Testing helps prevent accidents, ensures a drug-free workplace,and meets Federal mandates such as those outlined by the Department of Transportation (DOT)

Drug Testing Services

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

Urine Drug Testing Services

Urine drug testing is a widely used screening method for detecting recent drug use. It is easy to administer, non-invasive, and cost-effective. This testing helps identify the presence of drugs and their metabolites in the urine. Results are generally fast, making it ideal for various situations.

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Purpose of Urine Drug Testing

  • Pre-employment screening
  • Post-accident analysis
  • Random testing programs
  • Medical evaluations
  • Rehabilitation monitoring

What Drugs Can Be Detected

  • Marijuana (THC)
  • Cocaine
  • Opiates
  • Amphetamines
  • Benzodiazepines
  • Barbiturates

Urine drug testing in Knollwood, Texas is a reliable choice for employers and individuals seeking an effective drug detection method. The test's versatility and accuracy make it a cornerstone in drug testing programs.

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Alcohol Test Services

Alcohol testing is a procedure to determine the presence of alcohol in an individual's system. It is frequently used in various settings such as workplaces, law enforcement, and medical evaluations. Alcohol tests can measure current intoxication levels and ensure compliance with safety standards.

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  • Employment screening
  • Forensic investigation
  • Legal compliance
  • Health assessments
  • Workplace safety assurance

Common Methods of Alcohol Testing

  • Breathalyzer
  • Blood tests
  • Urine tests
  • Saliva tests
  • Hair tests

Breathalyzer - Measures alcohol concentration in breath for instant results.

Blood tests - Provides detailed BAC analysis through a laboratory process.

Urine tests - Detects alcohol consumption within the past few days.

Saliva tests - Quick and non-invasive, used for detecting recent alcohol use.

The importance of alcohol testing in Knollwood, Texas cannot be overstated, as it plays a crucial role in ensuring public safety and maintaining legal standards across numerous fields.

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Hair Follicle Drug Testing Services

Hair follicle drug testing in Knollwood, Texas provides a reliable method to detect long-term drug use by analyzing a small sample of hair. Drugs enter the hair shaft through the bloodstream, allowing this testing method to reveal usage patterns over months. It is less invasive and highly accurate for extended detection.

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Why Use Hair Drug Testing?

  • Longer detection window
  • Difficult to cheat or tamper with
  • High accuracy rate
  • Non-invasive collection
  • Tracks drug usage history

What Drugs Can Be Detected

  • Marijuana
  • Cocaine
  • Amphetamines
  • Methamphetamines
  • Opiates

By choosing hair follicle testing in Knollwood, Texas, you're ensuring comprehensive and credible results for monitoring drug use over extended periods. This method is highly valued in legal and employment settings.

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DOT Drug Testing Services

DOT drug testing in Knollwood, Texas is a standardized procedure for transportation employees, mandated by the Department of Transportation, to ensure safety by random testing for drugs like marijuana, cocaine, and opiates. Results can directly impact employment status.

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Who is Required to Take DOT Drug Tests?

  • Commercial drivers
  • Aviation workers
  • Railroad employees
  • Transit drivers
  • Pipeline workers
  • Merchant mariners

What Drugs Are Tested For

  • Marijuana
  • Cocaine
  • Amphetamines
  • Opiates
  • PCP

With its strict guidelines and protocols, DOT drug testing in Knollwood, Texas is instrumental in endorsing public and workplace safety, offering precise and legal-compliant results.

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Probation Drug Testing Services

Probation drug testing in Knollwood, Texas involves regular or random drug screenings for offenders under legal supervision. This process is crucial to ensure compliance with court mandates and to support rehabilitation efforts by monitoring substance use among probationary individuals under legal supervision.

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Why Are Probation Drug Test Services Available?

  • Compliance with legal conditions: Ensures adherence to probation terms
  • Rehabilitation support: Assists in recovery monitoring
  • Deterrence of drug use: Reduces likelihood of reoffending
  • Public safety: Protects the community
  • Judicial resources: Optimizes case management

Testing Methods

  • Urine tests: Most common and cost-effective
  • Hair follicle tests: Longer detection window
  • Saliva tests: Quick and non-invasive
  • Blood tests: Highly accurate

Probation drug testing in Knollwood, Texas helps ensure compliance and facilitates rehabilitation by regularly monitoring drug use. These tests help maintain public safety and promote accountability among probationers.

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Court Ordered Drug Testing Services

Court ordered drug testing implements mandatory testing for individuals involved in legal matters, ensuring compliance with judicial requirements and promoting responsible behavior through scheduled or random testing.

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Why are Court Ordered Drug Test Services Available?

  • Ensuring legal compliance
  • Monitoring parole conditions
  • Supporting child custody cases
  • Rehabilitation and recovery monitoring
  • Public safety assurance

Court Ordered Test Methods

  • Urine tests: Commonly employed for frequent monitoring.
  • Hair follicle tests: Provides detailed drug history.
  • Saliva tests: Quick results, non-invasive.
  • Blood tests: Offers precise measurements.
  • Nail tests: Detects drug use over extended periods.

In Knollwood, Texas, court ordered testing is vital for legal processes and compliance, ensuring the safety and welfare of individuals under judicial supervision and maintaining order and fairness in the legal system through reliable substance monitoring.

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Fingernail Drug Testing Services

Fingernail drug testing in Knollwood, Texas provides a unique detection method for substance use, offering a long detection window up to several months. By analyzing nail samples for drug metabolites, it ensures accuracy in longitudinal substance detection.

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What is the Detection Window for Fingernail Drug Tests

  • Fingernails: Detects drug use over months
  • Toenails: Longer detection due to slower growth

What Drugs Can Be Detected

  • Marijuana
  • Cocaine
  • Opiates
  • Amphetamines
  • PCP

Advantages over other methods

  • Long detection period
  • Non-invasive
  • Difficult to adulterate
  • Comprehensive results
  • Less prone to contamination

As a reliable method, fingernail drug testing in Knollwood, Texas provides critical data for long-term substance monitoring, offering a robust alternative to other testing methods.

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Occupational Health Test Services

Occupational health testing in Knollwood, Texas aims to ensure workplace safety by assessing the health and fitness of employees for their specific roles. These tests help prevent workplace injuries and contribute to overall employee well-being, compliance, and efficiency.

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Purpose of Occupational Health Testing

  • Ensure employee safety
  • Enhance workplace productivity
  • Meet regulatory requirements
  • Identify health risks early
  • Promote a healthy work environment

Common Types of Occupational Health Tests

  • Fitness for duty exams: Evaluate ability to perform job tasks.
  • Respirator Fit Testing: Ensure safety in hazardous environments.
  • Pulmonary Function Tests (PFT's): Assess respiratory health.
  • Tuberculosis (TB): Screen for tuberculosis infection.
  • Vision: Check eyesight for roles requiring precise visual tasks.
  • Audiometric: Evaluate hearing ability.

Our services in Knollwood, Texas help employers maintain a safe, compliant, and healthy work environment through comprehensive testing solutions.

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Drug Statistics for Knollwood, Texas

Drug-Related Statistics for Knollwood, Texas:

  • Knollwood has witnessed a steady demand for drug testing services due to policies promoting drug-free workplaces in Grayson County.
  • Local law enforcement and health agencies work collaboratively to track substance abuse trends and provide resources for prevention and recovery.
  • Community initiatives focus on educating residents about the risks associated with drug use, contributing to a relatively low incidence of drug-related issues compared to larger urban areas.

Knollwood Drug Testing

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

Knollwood DOT Drug Testing

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

Knollwood DNA Testing

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

Knollwood Industry Training

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

Knollwood Hair Drug Testing

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

Knollwood Alcohol Testing

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

Knollwood Drug Testing Services

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

Knollwood 5 Panel Drug Test

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

Knollwood 10 Panel Drug Test

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

Knollwood On Site Drug Testing

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

Knollwood DOT Physicals

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

Employers, attorneys, probation officers, courts, and private individuals can all request testing. In most cases, no physician referral is required. An individual may request personal testing for documentation, family-related concerns, or peace of mind.
Available options include 5 panel and 10 panel drug tests, hair follicle tests for longer detection windows, urine drug screens for standard workplace needs, saliva/oral fluid testing for recent use detection, and evidential breath alcohol testing. Customized panels can also be arranged based on policy or legal requirements.
Yes. Accredited Drug Testing supports DOT-regulated and other safety-sensitive positions with required testing such as random, post-accident, reasonable suspicion, return-to-duty, and follow-up testing, following proper procedures and documentation.
Yes. Post-accident and reasonable suspicion testing are available to help document whether drugs or alcohol may have been a factor in a workplace incident or observed behavior. On-site/mobile response is available for urgent situations to limit downtime and capture timely results.
Yes. Results are released only to the authorized party — for example, an employer’s designated representative, a court or probation contact, or the individual who requested the test. Accredited Drug Testing follows secure reporting practices.
If an initial screen is not negative, the sample goes through confirmatory testing using more specific analytical methods. Final results are not reported until confirmation is complete to ensure accuracy and defensibility.
Yes. Accredited Drug Testing offers on-site/mobile collections for employers. Mobile collections reduce employee downtime, are useful for job sites and remote work locations, and are critical for immediate post-incident or reasonable suspicion situations.
Common specimen types include urine, hair, saliva/oral fluid, and breath (for alcohol). Each method supports different needs: urine is widely used for workplace testing, hair provides a longer detection history, saliva/oral fluid can capture more recent use, and breath alcohol testing measures current alcohol concentration.

Customer Reviews

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

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

Kind and very helpful

Called around for hours and posted from company to person and got nowhere and had to fight to get a refund die to there miss information, well save time and sanity Acredited is the ONLY place the person was kind and very helpful, said what I needed and Faith the lady I dealt with made it simple and she did above and beyond everything I needed, as I'm going through a devorse this was a great help and made my day 100 stars from me.

Steven Harrison - 12/19/2024


(800) 221-4291