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Hair Exposure Drug Testing (ChildGuard®)

When a child is exposed to substance use, they often face other coexisting obstacles to normal life – neglect, abuse, violence, and other vulnerabilities. Substance Use Disorder (SUD) is a disease that often prevents adults from doing what is in a child’s best interest. Detecting dangerous environments is paramount to keeping the child safe. Testing with ChildGuard can assist where other exposure drug tests fall short.

Hair anatomy with sweat and body oils and environmental exposuresChildGuard is the only drug test designed to detect passive exposure to drugs, distinguishing between both native drugs and drug metabolites in hair specimens. Drug metabolites are produced in the body only if drugs have been ingested. Children in drug-exposed environments are most often not using substances themselves, so drug metabolites are typically absent when a child is being tested for drug exposure. Typical hair tests with other labs will only report a positive exposure result if drug metabolites are detected, even when the native drug is in the child’s hair specimen. ChildGuard reports a positive result if either native drugs or drug metabolites are detected, giving much better insight into the child’s environment. ChildGuard can provide evidence of substance exposure in a child’s environment for the past 3 months and can be performed on donors of any age.

Environmental exposure in this context is one or more of the following:

  • Contact with drug smoke,
  • Contact with sweat or sebum (skin oil) of a person in active use,
  • Contact with the actual drug,
  • Unintentional or intentional ingestion of the drug(s).

Our forensic test for passive exposure is the first and only test of its kind. See our hair testing pages for information about specimen collection. 

ChildGuard Collection Instructions  ChildGuard Collection Slides

ChildGuard Training Video  ChildGuard Fact Sheet  

ChildGuard Resources

Drug Panels

For a printable PDF click here.

  • 13 Panel
  • 10 Panel
  • 9 Panel
  • 7 Panel
  • 5 Panel
amphetamine, MDA, MDEA, MDMA, methamphetamine
Δ8-THC, Δ9-THC, Δ10-THC, cannabidiol (CBD), carboxy-Δ9-THC
benzoylecgonine, cocaethylene, cocaine, norcocaine
6-MAM, codeine, hydrocodone, hydromorphone, morphine, norhydrocodone
phencyclindine (PCP)
alprazolam, diazepam, midazolam, nordiazepam, oxazepam, temazepam
amobarbital, butalbital, pentobarbital, phenobarbital, secobarbital
EDDP, methadone
norpropoxyphene, propoxyphene
noroxycodone, oxycodone, oxymorphone
acetyl fentanyl, acetyl norfentanyl, fentanyl, norfentanyl
*Click the green and white plus sign beside each drug class to view the substances within each class.


Collection Instructions
Client Services

By Phone: 1.800.235.2367

Business Hours (CST)

Monday 7am-7pm
Tuesday 7am-7pm
Wednesday 7am-7pm
Thursday 7am-7pm
Friday 7am-7pm
Saturday 8am-5pm

Contact Client Services

Testing Details

Panel Name: Hair Exposure Testing (ChildGuard®)

Panel Description: Hair Exposure Testing (ChildGuard®) Drug Panel

Type: Profile

Matrix: Hair

Collection Container: Foil in a tamper-evident sealed envelope

Specimen Requirements:  For all tests below a 10-panel, specimen volume should be at least 100mg of specimen. This is equal to a bundle of hair that is 1.5 inches in length and about ¼ inch in diameter, the diameter of a #2 pencil. For EtG, add-ons, and/or any tests 10-panel and above, at least 150mg of specimen should be submitted. We recommend weighing the specimen on a gem scale.
Storage Conditions:  Specimens should be stored in a dry, dark area at room temperature and may be shipped at ambient temperature.
Transport Conditions: Ambient
Method: Initial screen and confirmation
Turnaround Time: Generally, the standard turnaround time for reporting negative screening test results is the next business day, with an additional 1-2 business days for specimens that require confirmatory testing. Turnaround time begins from receipt of the valid specimen –accompanied by a properly documented valid order– into the laboratory. Some tests require additional time to process and will fall outside the standard turnaround time window.

Contact USDTL


Client Services

By Phone: 1.800.235.2367
Business Hours (CST)
Monday....................7am-7pm Tuesday....................7am-7pm Wednesday.............7am-7pm Thursday..................7am-7pm Friday........................7am-7pm Saturday...................8am-5pm

Contact Client Services

Newsletters, Posters, and Catalogs

Our print materials will keep you up to date on the latest news in drug and alcohol testing.

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Request Your Collection Supplies

For your convenience, USDTL provides test collection supplies at no additional charge.

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