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Table Of Content Los Angeles Drug Testing Services How Far Back Do Hair Drug Tests Go? Panel Hair Drug Test panel Drug Test Testing Process Specimen Collection Hair Follicle vs. Urine vs. Blood Drug Tests Hair is collected as close to the scalp as possible, near the hair’s root, to provide information about recent drug use. A standard sample of hair is around 1.5 inches, although in some cases a longer sample may be collected for additional history of drug use and misuse. If the result is positive, a second test called gas chromatography–mass spectrometry (CG-MS) is performed to confirm the result. The CG-MS is a different method of testing for substances and can confirm a positive result from the ELISA test. Los Angeles Drug Testing Services Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA covered services. ADT can schedule and manage all of your DOT and NON-DOT drug testing needs Nationwide, anywhere and at anytime. Studies h

Table Of Content What is the hair testing procedure? Hair drug testing How Does Hair Testing Work? Drug Testing Services in Los Angeles, California How to get tested Hair drug testing uses the first inch and a half of growth from the base and roughly 120 strands, to determine any drug use within the past approximately 7 to 90 days. Although it is still fairly new technology, hair testing is very effective as long as it is administered by a properly trained technician. Our experience has allowed us to develop the expertise that has helped to make our testing processes as simple and efficient as possible. There are several types of hair drug test panels available, depending on the substances you want to test for. What is the hair testing procedure? Hair follicle tests can detect the presence of some prescription medications, which can lead to a false-positive result. Hair follicle tests can provide a much larger window of detection than urine tests. Although hair samples undergo