How far back does a hair analysis test go?

While a urine drug screen can detect if you’ve used drugs in the last few days, a hair follicle drug test can detect drug use in the past 90 days. Your workplace may request a hair follicle test to screen for illicit drug use before hire or randomly during employment.

How do forensic technicians analyze hair?

Hair is a common type of evidence submitted to the trace section for analysis. On average, humans shed approximately 100 head hairs per day.

How reliable is hair analysis in forensics?

In forensic toxicology Hair analysis is less invasive than a blood test, if not quite as universally applicable. In this context, it has been reliably used to determine compliance with therapeutic drug regimes or to check the accuracy of a witness statement that an illicit drug has not been taken.

How accurate is a hair analysis?

Although hair samples undergo a two-step testing process, they are not 100 percent accurate. Factors that can affect the concentration of drug metabolites present in a hair sample include: the structure of drug compounds. the quantity of drugs a person has consumed.

What are the three major types of hair analysis?

Forensic scientists perform 3 major types of hair analysis: (1) testing the hair shaft for drugs or nutritional deficiencies in a person’s system, (2) analyzing DNA collected from the root of the hair, and (3) viewing hair under a microscope to determine if it’s from a particular person or animal.

How accurate is hair DNA testing?

Hair Follicle DNA Test Cheek swabs are guaranteed to contain viable DNA; however, hair strands are not. We typically can extract the DNA in 80-90\% of cases. If you order this test, and the hair turns out to not have viable DNA, you will not get results.

What are the pros to hair analysis?

Hair analysis presents several advantages, particularly when one compares its features to those characteristic of other biological specimens. Indeed, hair is collected in an almost non-invasive fashion, without the need for needles or supervised collections, which makes the test more bearable for the specimen donor.

How much does a hair DNA test cost?

$80 60-90\%