18 Panel Hair Follicle Drug Test
Health Street's 18 Panel Hair Drug Test is our most comprehensive hair drug testing option, screening for a broad range of prescription medications, illicit drugs, and controlled substances. Using a professionally collected hair sample, this 18 panel drug test provides an extended detection window of approximately 90 days, making it an excellent choice for employers who want a more complete picture of an individual's drug use history.
An 18 panel drug screen is commonly used for pre-employment screening, safety-sensitive positions, executive hiring, return-to-duty testing, court-ordered testing, and other situations where a broader testing panel is needed. Health Street offers nationwide collection sites, secure online reporting, and fast registration for both employers and individuals.
Register online or call (888) 378-2499 to schedule an 18 panel drug test today.
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Frequently Asked Questions
How far back does an 18 panel drug screen detect drug use?
A standard hair sample generally provides a detection window of approximately 90 days. Hair testing is designed to identify repeated or ongoing drug use rather than very recent use.
Why choose an 18 panel instead of a smaller drug panel?
An 18 panel drug screen tests for a larger number of substances, including additional prescription medications and synthetic drugs that may not be included in traditional five-, ten-, or twelve-panel drug tests.
Does the 18 panel test include fentanyl?
Yes. Health Street's 18 panel includes fentanyl as part of its expanded testing panel.
Can hair treatments affect test results?
Routine washing, shampooing, and most cosmetic hair treatments generally do not prevent laboratories from detecting drug metabolites in hair samples.
Can employers test multiple employees at the same time?
Yes. Health Street coordinates 18 panel drug testing for individual employees, departments, and nationwide workforces.
Can this test be combined with other workforce screening services?
Yes. Many employers combine an 18 panel drug test with background checks, occupational health services, identity verification, and other employment screening services.
How long does it take to receive results?
Turnaround times vary depending on laboratory processing. Once testing is complete, results are securely available through Health Street's online reporting portal.
About Our 18 Panel Hair Follicle Drug Test
What Is an 18 Panel Drug Test?
This test is our most comprehensive hair drug test available. Health Street's 18 panel drug screen analyzes a professionally collected hair sample for a broad range of prescription medications, illicit drugs, and commonly abused controlled substances. Because drug metabolites become incorporated into the hair shaft as hair grows, the test can identify patterns of drug use over approximately the previous 90 days.
Hair testing is often selected when employers need a longer detection window than urine or saliva testing can provide.
When Is an 18 Panel Drug Test Used?
An 18 panel drug test is commonly ordered when employers need the broadest possible drug screening. It is frequently used for:
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Executive and management hiring
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Safety-sensitive positions
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Healthcare employees
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Court-ordered testing
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Child custody cases
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Return-to-duty programs
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Ongoing employee monitoring
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Personal testing
Organizations that require more extensive screening than a standard five-, seven-, or twelve-panel test often choose an 18 panel drug screen because it includes additional drugs that may not appear on smaller panels.
Why Choose an 18 Panel Hair Drug Test?
Health Street's 18 panel is our most comprehensive hair drug testing option. In addition to its extended detection window of approximately 90 days, it screens for a larger number of drugs than standard workplace hair tests.
Benefits include:
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Approximately 90-day detection window
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Expanded drug panel
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Difficult to adulterate or substitute
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Laboratory confirmation of non-negative results
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Nationwide collection sites
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Secure online reporting
This test is ideal for employers who want the broadest available view of long-term drug use while supporting a drug-free workplace.
Why Choose Health Street
Health Street's drug testing services offer individuals and employers many advantages and benefits.
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Safe, secure, and fast drug testing with accurate results
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Choose from our nationwide network of more than 10,000 licensed labs
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Mobile drug testing available for companies and individuals
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Secure portal for easy test management and viewing of results
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Trusted provider in the drug testing industry
What Drugs Does the 18 Panel Hair Follicle Drug Test Cover?
Please keep in mind that although this is the 18 Panel Hair Follicle Drug Test, more types of substances can be detected in this panel. This is because many of these drugs belong to the same class (e.g., codeine, morphine, and heroin are all basic opiates).
The following substances can be detected in the 18 Panel Hair Follicle Drug Test. Use the below links for more information about each substance:
Related Tests
Need a different testing option?
Health Street offers many other options for hair drug testing. If you'd like to see a comprehensive list of all hair drug tests that we offer, you can view all hair tests here.
If hair testing isn't what you need, consider trying one of the following options: