Adult & Child Drug Testing Lab

Hair Drug Testing

Recently, hair testing has come to be seen as a powerful tool for the detection of drug and alcohol abuse. Hair provides a long-term history of drug and alcohol abuse by trapping biomarkers in the fibers of the growing hair strand. When collected close to the scalp, hair can provide up to a 3 month history of alcohol and drug abuse. Drug and alcohol biomarkers can appear in scalp hair 1-7 days after the last use. Hair offers a sample that is simple to collect, somewhat difficult to adulterate, and easy to ship. A 1.5 inch sample of about 200 strands of hair (about the size of a #2 pencil) closest to the scalp will give 100mg of hair, the ideal sample for screening and confirmation. For EtG, add-ons and/or tests above 10-panel, 150mg of specimen is recommended. We recommend weighing the specimen on a jeweler's scale. If scalp hair is not available, an equal amount of body hair may be collected. When referring to head hair, we are referring to scalp hair only. Body hair refers to all other types of hair (facial, axillary, etc).


D/L Methamphetamine Isomer testing is available upon request for specimens that test positive for methamphetamine.

Drug Panels

  • 17 Panel
  • 16 Panel
  • 15 Panel
  • 14 Panel
  • 12 Panel
  • 10 Panel
Amphetamines
amphetamine, MDA, MDEA, MDMA, methamphetamine
Cannabinoids
carboxy-THC
Cocaine
benzoylecgonine, cocaethylene, cocaine, norcocaine
Opiates
6-MAM, codeine, hydrocodone, hydromorphone, morphine, norhydrocodone
Phencyclidine
phencyclindine (PCP)
Benzodiazepines
alprazolam, diazepam, midazolam, nordiazepam, oxazepam, temazepam
Barbiturates
amobarbital, butalbital, pentobarbital, phenobarbital, secobarbital
Methadone
EDDP, methadone
Propoxyphene
propoxyphene, norpropoxyphene
Oxycodone
oxycodone, oxymorphone, noroxycodone
Meperidine
normeperidine
Tramadol
tramadol
Fentanyl
norfentanyl
Sufentanil
norsufentanil
Ketamine
ketamine, norketamine
Buprenorphine
buprenorphine, norbuprenorphine
Zolpidem
zolpidem (e.g. Ambien®)
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*Click the green and white plus sign beside each drug class to view the substances within each class.
Add-Ons Available
Diphenhydramine
diphenhydramine
High-Potency Opioids (HPOs)
6-β-Naltrexol (naltrexone metabolite), butorphanol (e.g. Stadol®), nalbuphine (e.g. Nubain®), naloxone (e.g. Narcan®), naltrexone (e.g. Revia®)
EtG (Direct Ethanol Biomarker)
ethyl glucuronide
Propofol Glucuronide
propofol glucuronide (e.g. Diprivan®)
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Collection

Collection Instructions
Client Services

By Phone: 1.800.235.2367

Business Hours (CST)

Monday 6am - 8pm
Tuesday 6am - 8pm
Wednesday 6am - 8pm
Thursday 6am - 8pm
Friday 6am - 8pm
Saturday 8am - 5pm

Contact Client Services

Testing Details

Panel Name: HairTesting

Panel Description: Hair Testing Drug Panel

Type: Profile

Matrix: Hair

Collection Container: Foil in Secure Envelope

Sample Amount: 100 mg = 200 strands @ 1.5 inches     (We recommend weighing the specimen on a jeweler's scale.)

Storage Conditions: Room 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.
 

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Can a hair test be manipulated by the donor?

Yes. Bleaching, perming, dyeing and straightening can affect the outcome of a hair test. Cosmetically treated hair should not be collected.

Can a hair test be used to prove that a previously taken urine test was inaccurate?

No. The results of any second collected specimen have absolutely no bearing on the validity of the results of the first collected specimen. Furthermore, each matrix has its own advantages, disadvantages and limits of interpretation.

Can a hair test determine how much or how often someone is using a drug?

No. Hair is a reservoir matrix, where drugs can collect and/or degrade over time. When testing any reservoir matrix, you are unable to back-track and determine time, dosage or frequency because there are simply too many variables involved.

Can someone test positive in hair because of passive or environmental exposure?

Yes, drugs are incorporated into hair by three major routes: environmental exposure, sweat and sebum from the scalp and blood flow through the follicle. Environmental exposure however will only generate a positive for the parent drug. Example: methamphetamine only. The other two mechanisms lay down drug and drug metabolites. Example: amphetamine/methamphetamine positive.

Does race make a difference in hair testing results?

Hair color, not race, is one of the most important variables in determining the quantity of drug found in the hair. Dark hair binds drug tighter than light hair.

How long can drugs be detected in body hair?

Body hair has a different growth cycle compared to head hair. Body hair may go dormant and remain in place up to one year. A positive result reflects exposure up to 12 months.

How long can drugs be detected in head hair?

Once a drug is incorporated into hair, it begins to slowly leach out due to normal daily hygiene and exposure to the elements. Most drugs have disappeared by three months. Furthermore, the laboratory only analyzes the first 1.5 inches (3.9 centimeters) nearest the scalp. Hair grows at an average rate of 0.5 inches per month.

Q: Why are both ethyl sulfate (EtS) and ethyl glucuronide (EtG) included in urine testing for alcohol use, but only EtG in fingernail or hair testing?

A: For urine testing, it is standard practice in the field of toxicology to include both EtS and EtG, because EtG is subject to bacterial production and degradation if a urine sample is contaminated (e.g. when the donor has a urinary tract infection). EtS is not subject to bacterial production or degradation, and provides a second, more reliable alcohol biomarker in these urine contamination scenarios. Other specimens types, such as fingernails and hair, do not have this issue, so only EtG is measured in those sample types.

What does a positive hair test result mean?

The only interpretation that can come from a positive hair test is that the individual used or was exposed to drug during the three months prior to collection.

Why do we test for EtG in hair and not FAEE?

FAEE is less sensitive and can produce false positives. Hairspray and other hair products can produce FAEEs in hair. There is no enzyme in our hair that can create ETG from those products.




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