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Lab Testing USA has drug test labs located in most cities and metropolitan areas including all 50 states and Puerto Rico. Our trained and certified staff are prepared to provide a drug test for employment purposes, US Department of Transportation testing requirements, probation and court ordered drug tests, along with medical or student drug testing needs. Most of our drug test labs are open early in the morning and are available for a urine drug test, hair follicle drug test or an oral fluid drug test. All drug tests are performed using a chain of custody form, along with medical review officer (MRO) verification. Lab Testing USA also only uses SAMHSA Certified Laboratories. Scheduling a drug test is convenient and easy. You may call our toll-free number at (800)441-2728 to find the closest drug test location near you or you can schedule your drug test. An alcohol test is also available by breath, urine and hair.
Drug Test Methods and Panels Available
Urine Drug Test
Hair Follicle Drug Test
Oral Fluid Drug Test
Blood Drug Test
5 panel Test
10 Panel Test
12 Panel Test
14 Panel Drug Test
What is a Urine Drug Test?
A urine drug test (also called a urinalysis drug test) is the most common and federally approved method for detecting recent illegal drug use, prescription drug misuse, and certain controlled substances. It is the standard test required by the U.S. Department of Transportation (DOT) under 49 CFR Part 40 for safety-sensitive employees, making it the gold standard for workplace drug testing.
Why Choose Our Urine Drug Test Services?
- Fast, Reliable Results – Negative results typically available within 24 hours.
- DOT & Non-DOT Options – Fully compliant with 49 CFR Part 40 for safety-sensitive employees.
- Confidential Testing – Secure, Confidential reporting.
- Affordable Pricing – Competitive rates with employer and bulk testing discounts.
- Customizable Panels – Combine alcohol testing with standard drug test panels for comprehensive screening.
Who Needs a Urine Drug Test?
- ✔️ Employers – Maintain a safe and compliant workplace
- ✔️ DOT-Regulated Employers – FMCSA, FAA, FRA, PHMSA, FTA, USCG compliance
- ✔️ Court-Ordered & Probation Testing
- ✔️ Schools & Sports Programs
- ✔️ Personal & Family Reasons
What is a Hair Follicle Drug Test?
A hair follicle drug test (also known as a hair drug test or hair strand drug test) is a highly reliable screening method that detects long-term drug use. Unlike urine or saliva tests that measure recent drug use, hair testing can detect drug use for up to 90 days (and sometimes longer), making it a popular choice for employers, courts, and individuals who want the most comprehensive history of substance use.
Why Choose A Hair Follicle Drug Test?
- Longest detection window – Up to 90 days of drug use history
- Court-admissible – Frequently required for child custody cases, probation, and legal proceedings
- Employer-preferred – Detects consistent, repeated use instead of short-term exposure
- Highly accurate – Collected and processed with chain-of-custody procedures in certified labs
- Convenient & fast – Collection is non-invasive (small hair sample cut from the scalp)
Who Needs a Hair Follicle Drug Test?
- ✔️ Employers (especially in industries with zero-tolerance policies)
- ✔️ Courts & Family Law Cases (child custody, divorce, probation requirements)
- ✔️ Attorneys requiring legally defensible results
- ✔️ Parents & Schools seeking long-term detection for student safety
- ✔️ Individuals who want private testing with a longer detection window
What is an Oral Fluid Drug Test?
An oral fluid drug test (also called a saliva drug test) is a fast, accurate, and non-invasive method for detecting recent drug use. Instead of collecting urine or hair, this test uses a saliva swab taken from inside the mouth, making it one of the easiest and most convenient types of drug testing.
Why Choose our Oral Fluid Drug Test?
- Direct Observation = Tamper-Resistant Unlike urine testing, oral fluid collection is performed in full view, which makes it nearly impossible for donors to substitute or adulterate their sample.
- Fast Turnaround Negative results are often available the same day, with lab confirmation for positives typically within 2–3 business days.
- Detects Recent Drug Use Saliva testing is best at identifying very recent drug use (within minutes up to 48–72 hours). This makes it ideal for post-accident testing, reasonable suspicion cases, and return-to-duty scenarios where immediate detection is critical.
- Convenient & Non-Invasive No restroom is required. The sample is collected using a simple mouth swab, making it quick, hygienic, and less intrusive—especially helpful in schools, sports, or court-ordered programs.
Who Needs an Oral Fluid Drug Test?
✔️ Employers – Maintain a safe, drug free workplace
✔️ DOT-Regulated Employers (coming soon) – FMCSA, FAA, FRA, PHMSA, FTA, USCG compliance
✔️ Courts & Legal Cases - Probation or Court Ordered
✔️ Schools, Colleges & Sports Programs
✔️ Individuals for Personal Use
What is a Blood Drug Test?
A blood drug test is one of the most accurate methods available for detecting recent drug use. Unlike urine, hair, or oral fluid tests that detect metabolites or long-term use, a blood test measures the actual parent drug present in the bloodstream at the time of collection.
Why Choose a Blood Alcohol Test?
- Most Accurate Method – Directly measures the parent drug in blood, not just metabolites
- Court-Admissible – Frequently ordered in criminal cases, child custody disputes, and probation monitoring
- Detects Very Recent Use – Best at identifying drugs taken within the past few hours to 1–2 days
- Wide Range of Substances – Panels available for standard drugs of abuse, prescription medications, and synthetic drugs
- Fast Turnaround – Preliminary results often available within 24 hours; confirmatory testing within 2–3 days
Who Needs a Blood Drug Test?
✔ Employers – Post-accident, reasonable suspicion, and return-to-duty cases where precise timing matters
✔ DOT-Regulated Employers – May use in rare circumstances if other methods are not possible, but typically rely on urine/oral fluid (49 CFR Part 40)
✔ Courts & Legal Programs – DUI/DWI evidence, probation monitoring, and custody disputes
✔ Hospitals & Healthcare Providers – Emergency situations, overdose, or impairment assessments
✔ Individuals – When court-ordered or for personal documentation of sobriety
What are Common Reasons for a Drug Test?
People often ask, what are the common reasons for a drug test? Drug tests are commonly used or required for employment, legal, medical, and personal reasons.
The most frequent reasons include:
- Pre-Employment Drug Test: Employers use drug tests to maintain a drug free workplace before hiring.
- Random Drug Test: Unannounced testing which helps maintain a safe, drug-free work environment.
- DOT-Regulated Tests: These are mandatory under 49 CFR Part 40 for transportation industries (FMCSA, FAA, FRA, FTA, PHMSA, USCG).
- Post-Accident Testing: Used to determine if drugs or alcohol played a role in workplace or vehicle accidents and is also mandatory under certain conditions outlined in 49 CFR Part 40
- Reasonable Suspicion / For-Cause Testing: These drug tests are used when there is evidence or behavior suggesting drug use.
- Return-to-Duty & Follow-Up Testing: This drug or alcohol test is required for employees returning to safety-sensitive positions after a DOT policy violation.
- Court-Ordered or Probation Testing: Often required in DUI/DWI cases, custody disputes, or probation compliance.
- School & Sports Programs: Used to enforce drug-free participation policies
- Personal & Family Reasons: Individuals may order tests for peace of mind, monitoring sobriety, or family safety.
In short, drug testing is used to promote safety, compliance, and accountability in workplaces, legal systems, healthcare, schools, and personal settings.
How long does it take for drug test results?
There are several factors that impact the turnaround time for drug test results. The time it takes to get drug test results depends on the type of test, whether initial screening is positive or negative, transportation and logistics to the certified lab and any other additional or confirmation testing that is required.
Urine Drug Test Negative results:
- Negative Results typically, within 24 hours and non-negative (positive) results will require additional confirmation testing and MRO review, which can an additional take 2–3 business days
Oral Fluid (Saliva) Test Results:
- Negative results: often withinn24 hours and any non-negative results may require reported the same day Confirmed results: typically, 1–3 business days
Hair Follicle Drug Test Results:
- Hair samples require a more complex testing method, and results take 3–5 business days on average
Blood Drug Test Initial results:
- Blood Drug Test often take a longer time to process at the lab level and are usually available in ess 5-7 business days?
In general, most negative drug test results are available within 24 hours, while positive results that require confirmation may take 2–5 business days, depending on the method.
Lab Testing USA has 7,762 Drug Test locations in 50 states.
Lab Testing USA has 7,762 drug testing centers in 50 states.
Please select a state from the list below to find drug testing locations near you.
How the Body Breaks Down Drugs and What It Means for Drug Testing
When a person uses drugs — whether prescription, over-the-counter, or illicit substances — the body immediately begins a process called drug metabolism. This process determines how long a drug stays in your system and directly impacts drug test detection windows.
Absorption
- Drugs enter the body through various routes: swallowing, inhalation, injection, or skin absorption.
- Once absorbed, the drug enters the bloodstream, which transports it to the brain, liver, kidneys, and other organs.
- For drug tests, absorption affects how quickly a substance can be detected in urine, saliva, blood, or hair.
Distribution
- After absorption, drugs spread throughout the body, attaching to proteins, fat tissue, and water-rich organs.
- Some drugs (like marijuana/THC) are fat-soluble, which means they are stored in body fat and released slowly over time.
- This is why marijuana can show up on a urine drug test for days or even weeks, while other drugs clear much faster.
Metabolism (breaking down drugs)
- The liver is the main site of drug metabolism. Enzymes, especially the cytochrome P450 family, break drugs down into metabolites.
- These metabolites may be: Active (still affecting the body) Inactive (ready to be excreted)
- Drug tests usually detect metabolites, not the parent drug.
- For example: Cocaine → metabolized into benzoylecgonine, which is detected in urine tests.
- Alcohol → broken down into ETG/ETS metabolites, which extend the detection window in urine tests.
Elimination
Once metabolized, drugs are eliminated through:
- Urine – the most common method measured in workplace and DOT drug testing
- Breath – alcohol detection (Breath Alcohol Test)
- Saliva – oral fluid drug tests
- Hair – long-term detection in specialty testing
Urine drug tests are so common because drug metabolites are concentrated in urine, making detection easier and more cost-effective.
How Drug Metabolism Impacts Drug Testing Short detection windows: Drugs like cocaine or meth may only be detectable for 1–3 days in urine. Long detection windows: THC (marijuana) and benzodiazepines can be detected for days to weeks, especially in chronic users. Highly accurate testing: Because labs target specific metabolites, drug tests can distinguish between true use and false positives.
Because alcohol breaks down and leaves the body quickly, the detection period depends on the type of test performed. Standard alcohol tests show only recent use, while ETG/ETS urine tests and hair tests identify alcohol metabolites, allowing for detection long after ethanol itself has cleared.Drug Test Detection Windows (Visual Guide)
Compare how long drugs are typically detectable by urine, oral fluid, blood, and hair tests. Bars illustrate relative window length.
Oral Fluid (Saliva)
Detects parent drug + metabolites. Best for very recent use (minutes–72 hours). Observed, tamper-resistant.
Blood
Measures parent drug; strong indicator of recent use/impairment. Very short window.
Urine
Detects metabolites; broad coverage and cost-effective. Many drugs 1–7 days; THC can be longer with chronic use.
Hair
Shows long-term patterns using a ~1.5 inch sample; not suitable for very recent use.
*Detection windows are typical estimates and vary by drug class, dose, frequency, body composition, pH, and metabolism.