Drug Test Services - Castroville, TX

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

With 31 testing centers in the Castroville 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.

31 Drug Test Service Centers in Castroville

Minutes Away, Test Today

1501 Houston St

0.64 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1501 Houston St
Castroville, TX 78009

3903 Wiseman Blvd Suite 219

13.89 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3903 Wiseman Blvd Suite 219
San Antonio, TX 78251

3100 Avenue E

15.42 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3100 Avenue E
Hondo, TX 78861

4436 Culebra Rd Ste 3

18.31 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4436 Culebra Rd Ste 3
San Antonio, TX 78228

6430 Bandera Rd Ste 98

18.57 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6430 Bandera Rd Ste 98
San Antonio, TX 78238

6100 Bandera Road, Suite 400

18.66 mi
🕑 Testing Hours: Mon–Fri: 8:30 AM-4:00 PM✓ Walk-in with Electronic Donor Pass
6100 Bandera Road, Suite 400
San Antonio, TX 78238

9234 N Loop 1604 W Ste 110

18.71 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
9234 N Loop 1604 W Ste 110
San Antonio, TX 78249

5720 Bandera Rd Ste 14

18.98 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5720 Bandera Rd Ste 14
San Antonio, TX 78238

115 Duncan Dr

19.30 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
115 Duncan Dr
San Antonio, TX 78226

3015 General Hudnell Dr

19.45 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3015 General Hudnell Dr
San Antonio, TX 78226

9727 Poteet Jourdanton Fwy Ste 101

19.81 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
9727 Poteet Jourdanton Fwy Ste 101
San Antonio, TX 78211

9727 Poteet Jourdanton Fwy Ste 105

19.81 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
9727 Poteet Jourdanton Fwy Ste 105
San Antonio, TX 78211

7400 Barlite Blvd

20.01 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7400 Barlite Blvd
San Antonio, TX 78224

7390 Barlite Blvd Ste 135

20.03 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7390 Barlite Blvd Ste 135
San Antonio, TX 78224

5282 Medical Dr Ste 190

20.44 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5282 Medical Dr Ste 190
San Antonio, TX 78229

2040 Babcock Rd Ste 101

20.60 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2040 Babcock Rd Ste 101
San Antonio, TX 78229

2040 Babcock Rd Ste 303

20.60 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2040 Babcock Rd Ste 303
San Antonio, TX 78229

4241 Woodcock Dr Ste A125

20.72 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4241 Woodcock Dr Ste A125
San Antonio, TX 78228

8042 Wurzbach Rd Ste 140

21.23 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
8042 Wurzbach Rd Ste 140
San Antonio, TX 78229

4411 Medical Drive, Ste 170

21.30 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4411 Medical Drive, Ste 170
San Antonio, TX 78229

6222 Deiavala #104

21.60 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6222 Deiavala #104
San Antonio, TX 78249

2406 Commercial Ave Ste 111

21.84 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2406 Commercial Ave Ste 111
San Antonio, TX 78221

12703 Mountain Air Ste 105

21.94 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
12703 Mountain Air Ste 105
San Antonio, TX 78249

3355 Cherry Ridge St Ste 103b

22.54 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3355 Cherry Ridge St Ste 103b
San Antonio, TX 78230

5222 De Zavala Rd Ste 304

22.74 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5222 De Zavala Rd Ste 304
San Antonio, TX 78249

12651 Vance Jackson Rd Ste 114

22.89 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
12651 Vance Jackson Rd Ste 114
San Antonio, TX 78230

343 W Houston St Ste 308

23.47 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
343 W Houston St Ste 308
San Antonio, TX 78205

1303 Mccullough Ave Ste 136,

23.98 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1303 Mccullough Ave Ste 136,
San Antonio, TX 78212

400 E Quincy St

23.98 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-8:00 PM✓ Walk-in with Electronic Donor Pass
400 E Quincy St
San Antonio, TX 78215

710 Augusta St

24.08 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
710 Augusta St
San Antonio, TX 78215

1200 Brooklyn Ave Ste 165

24.08 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1200 Brooklyn Ave Ste 165
San Antonio, TX 78212

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 in Castroville, Texas is a reliable method for detecting a range of substances in the body, typically spanning a detection period of days to weeks, depending on the drug in question. This non-invasive procedure assesses recent and chronic drug use to help employers, probation officers, or courts ensure compliance with substance use policies.

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Purpose of Urine Drug Testing

  • Pre-employment screening
  • Random testing for employees
  • Probationary compliance
  • Medical diagnostics
  • Sports organizations

What Drugs Can Be Detected

  • Marijuana
  • Cocaine
  • Amphetamines
  • Opiates
  • Methadone

With its straightforward procedure and broad detection capabilities, urine drug testing in Castroville, Texas enables entities to confidently monitor and regulate drug use, ensuring accountability and safety within various sectors.

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Alcohol Test Services

Alcohol testing in Castroville, Texas measures blood alcohol content to assess impairment, using non-invasive methods that offer quick results. It's a crucial component in maintaining workplace safety and compliance.

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Alcohol Testing is used in many settings

  • Law enforcement
  • Workplace safety
  • Rehabilitation centers
  • Clinical assessments
  • Legal proceedings

Common Methods of Alcohol Testing

  • Breath analysis
  • Blood tests
  • Urine screening
  • Saliva tests
  • Hair analysis

Breath analysis - Used for quick field sobriety tests

Blood tests - Provides precise BAC measurements

Urine screening - Detects alcohol metabolite presence

Saliva tests - Offers rapid and convenient testing

Hair analysis - Provides long-term drinking behavior data

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Hair Follicle Drug Testing Services

The hair follicle drug test analyzes a small sample of hair to detect drug molecules and metabolites embedded in the hair shaft. This method provides a long detection window, making it ideal for tracking substance use over months.

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Why Use Hair Drug Testing?

  • Long detection window
  • Non-invasive sample collection
  • Hard to adulterate
  • Useful for long-term substance use verification
  • Comprehensive detection capabilities

What Drugs Can Be Detected

  • Cocaine
  • Opiates
  • Methamphetamine
  • Ecstasy
  • PCP

In Castroville, Texas, hair drug testing is increasingly popular for employers, parents, and organizations due to its reliability and comprehensive testing capabilities. It offers peace of mind, knowing you can trust the results obtained through a reputable and accurate testing method.

Order Your Test Online

DOT Drug Testing Services

In Castroville, Texas, DOT drug testing ensures compliance with federal regulations, focusing on safety-sensitive transportation roles. The DOT strictly governs these screenings to ensure the reliability and safety of public and commercial transit systems. This testing protocol includes strict adherence to guidelines and timely reporting.

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Who is Required to Take DOT Drug Tests?

  • Commercial truck drivers
  • Crew members on passenger airliners
  • Pipeline operators
  • Transit and railway operators
  • Commercial bus drivers
  • Maritime employees
  • Hazardous material transporters

What Drugs Are Tested For

  • THC
  • Phencyclidine (PCP)
  • Opiates
  • Amphetamines
  • Cocaine
  • Methamphetamines

DOT drug testing in Castroville, Texas is critical to the integrity and functionality of the transportation sector. By adhering to federal protocols, it helps maintain a safe operating environment for all transportation-related activities.

Order Your Test Online

Probation Drug Testing Services

Probation drug testing is a system used to monitor individuals on probation by ensuring they remain drug-free during their supervision period. This process is often crucial for rehabilitation and compliance with court mandates.

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Why Are Probation Drug Test Services Available?

  • Compliance monitoring: Ensures adherence to court mandates
  • Rehabilitation efforts: Supports recovery programs
  • Public safety: Protects communities
  • Accountability: Holds individuals responsible
  • Support networks: Reinforces positive behavior

Testing Methods

  • Urine tests: Most common method for recent use
  • Hair follicle tests: Detects long-term use
  • Saliva tests: Provides quick results
  • Blood tests: Used for specific substances
Probation drug testing in DC is an important component of community supervision programs. By maintaining rigorous standards, it aids in rehabilitating offenders and protecting society.

Order Your Test Online

Court Ordered Drug Testing Services

Court ordered drug testing in Castroville, Texas requires individuals involved in legal cases to undergo testing to confirm abstinence from illicit substances. It is a crucial component in family, criminal, and civil court cases.

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Why are Court Ordered Drug Test Services Available?

  • Child custody cases
  • Probation compliance
  • DUI offenses
  • Treatment Court Programs
  • Civil litigation
  • Parole situations

Court Ordered Test Methods

  • Urine tests: Widely used for quick detection.
  • Hair follicle tests: Offers a long detection window.
  • Saliva tests: Non-invasive and fast results.
  • Blood tests: Provides precise data.
  • Nail tests: Detects drug use over an extended period.

In Castroville, Texas, court-ordered drug testing is pivotal for ensuring justice and fairness, playing a key role in family and criminal law cases to maintain societal standards.

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Fingernail Drug Testing Services

Fingernail drug testing in , CT offers an extended detection window for substance use. By analyzing keratin in nails, it provides reliable results over a span of months, ideal for situations needing long-term substance use verification.

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What is the Detection Window for Fingernail Drug Tests

  • Fingernails: Detects drug use up to 6-8 months.
  • Toenails: Provides a longer detection window due to slower growth.

What Drugs Can Be Detected

  • Marijuana
  • Cocaine
  • Opiates
  • Amphetamines
  • Methamphetamines

Advantages over other methods

  • Extended detection period
  • Non-invasive testing
  • Difficult to adulterate
  • Provides permanent record
  • Universal acceptance

Fingernail drug testing in Castroville, Texas allows for comprehensive monitoring of an individual’s drug use history, offering reliable and extensive information, making it a valuable tool for legal and employment situations.

Order Your Test Online

Occupational Health Test Services

Occupational health testing in Castroville, Texas ensures that workplace conditions are safe and conducive to employee health. It involves various tests and evaluations to detect potential health risks, ensure compliance with safety regulations, and enhance workplace productivity and employee well-being.

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Purpose of Occupational Health Testing

  • Ensuring workplace safety
  • Identifying health risks early
  • Compliance with regulations
  • Promoting employee wellness
  • Reducing workplace accidents
  • Improving productivity

Common Types of Occupational Health Tests

  • Fitness for duty exams: Evaluate if employees can perform job effectively.
  • Respirator Fit Testing: Ensures proper face mask fit for protection.
  • Pulmonary Function Tests (PFT's): Assess lung function for respiratory health.
  • Tuberculosis (TB): Screen for TB infection risk in workplaces.
  • Vision: Checks visual capability for job-specific tasks.
  • Audiometric: Evaluates hearing abilities required for safety.

By implementing these tests, Castroville, Texas businesses can maintain compliance with regulatory requirements and enhance overall company health policies, supporting a healthy and efficient workforce.

Order Your Test Online

Drug Statistics for Castroville, Texas

While specific drug-related statistics for Castroville, Texas, are not readily available, Medina County, where Castroville is located, reflects concerning trends observed nationwide. It is vital for local communities to stay vigilant and prioritize awareness and support systems to effectively combat substance abuse issues.

Employment-related drug testing in the region underscores the importance of maintaining drug-free workplaces. Adopting comprehensive drug policies remains a significant focus, ensuring safety and well-being across various sectors within the county.

Drug Testing Regulations in Texas

Employer drug testing in Castroville must comply with state guidelines under Tex. Lab. Code § 411.091. Texas Labor Code § 411.091 mandates written policy distribution for employer drug testing programs while supporting broad pre-employment and random testing rights.

Medical Marijuana Status: Legal (Medical)  |  Recreational Marijuana Status: Prohibited

Surrounding Areas Served Near Castroville

La Coste • Lacoste • Riomedina • Dunlay • Lytle • Macdona • Natalia • Medina

Drug & Alcohol Test Selection & Panel Comparison

Test Type / Panel Detection Window Common Applications Turnaround Time
5-Panel Urine Screen 1 to 5 Days Standard Pre-Employment, Random & Workplace Testing 24 to 48 Hours
10-Panel Urine Screen 1 to 7 Days Expanded Employment, Healthcare & Probation 24 to 48 Hours
Hair Follicle Drug Test Up to 90 Days Long-Term Monitoring, Court-Ordered & Custody 3 to 5 Business Days
Oral Fluid / Saliva Screen 1 to 48 Hours Immediate Recent-Use Screening & On-Site Testing 24 to 48 Hours
ETG Alcohol Testing Up to 80 Hours Court-Ordered Alcohol Abstinence & Probation Monitoring 24 to 48 Hours

Castroville Drug Testing

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

Castroville DOT Drug Testing

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

Castroville DNA Testing

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

Castroville Industry Training

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

Castroville Hair Drug Testing

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

Castroville Alcohol Testing

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

Castroville Drug Testing Services

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

Castroville 5 Panel Drug Test

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

Castroville 10 Panel Drug Test

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

Castroville On Site Drug Testing

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

Castroville DOT Physicals

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

In Texas, workplace drug testing is governed by statutory guidelines under Tex. Lab. Code § 411.091. Private employers generally operate under a Texas Labor Code § 411.091 guidelines, permitting pre-employment, random, post-accident, and reasonable suspicion testing.
Yes. Employers in Texas who implement a certified Drug-Free Workplace Program in compliance with Tex. Lab. Code § 411.091 can qualify for insurance premium discounts and enhanced legal protections during workers' compensation claims.
Under Texas state law compliance standards, state statutes allows broad pre-employment, random, and post-accident testing. Safety-sensitive positions, DOT-regulated roles, and federal contract compliance remain strictly zero-tolerance across all jurisdictions.
Accredited Drug Testing provides access to 0 certified collection sites in the Castroville area, offering urine, hair follicle, breath alcohol, and DOT testing.
While walk-ins are welcome with an electronic donor pass at collection sites across Castroville, 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

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

Extremely polite

They were very fast extremely polite walked you through every detail of the process if you had any questions they had no problems answering

Billy Williams - 2/19/2025


(800) 221-4291