American Screening Corporation explained that if you're thinking about working at a company that uses drug testing, you may be wondering if it's possible to use hair from a brush for a drug test. Urine tests are commonly used by employers to screen job applicants to determine whether employees have been using drugs after a workplace accident.

Most drug tests only show if substances have been used within a certain period of time before the test is taken. This is because many drugs are absorbed into the bloodstream after being ingested and stay in the system for a long time.

Unlike urine, which only shows when a substance has been ingested and not when it was used, a hair follicle test shows the exact day that a sense was used. This is because the metabolites of drugs travel to every part of your body, including your hair.

This means that if you've been using drugs, they will remain in your hair for months after you stop. This is one of the reasons why employers choose to use a hair follicle drug test over other sample options like urine or oral fluids.

To get the most accurate results, a hair sample needs to be 1.5 inches in length and have the thickness of a pencil. This amount can be collected from the head or other areas of your body, such as the underarms or arms.

The test will establish a 90-day drug history from the date that the hair specimen was obtained. This time period can be extended if the sample is collected from another area of the body that grows more slowly than head hair.

A suitable method is to take a small strand of hair from the crown of your head. Then, a lab technician will cut it at an angle that will help the lab to get a clean sample for analysis.

Once the hair has been cut, it is put in a security envelope and sent to the lab for analysis. The lab will then send you a report with results that include a negative or positive impact for each drug class.

Hair follicle testing is a good option for drug screening in the trucking industry, as it's considered one of the most dangerous occupations. A driver who's under the influence of a controlled substance can cause a severe accident and damage their employer's reputation, as well as their own personal safety.

It's also a good choice for companies that need to hire employees who are able to work in environments with heavy machinery. This can be especially true in construction, where a bad mistake could lead to an accident or financial loss.

Hair follicle testing is the most effective way to screen for drugs. It is easy to collect a clean sample, and the results are highly accurate. Moreover, the risk of sample adulteration is significantly reduced by using hair follicles rather than urine.