Posts by hcoker@dna-worldwide.co.uk
Alcohol containing products impact on your alcohol results of hair strand testing (HST)
The impact of alcohol-containing hair products on alcohol hair strand testing (HST) is a common question that arises in alcohol monitoring cases. For testing historical alcohol use in hair, there are two main markers of alcohol which are tested for; Ethylglucuronide (EtG) and Fatty Acid... Read More
What is an expert witness report and how to get one
The legal world is something of a minefield for those who are not trained in the art of understanding it. With complicated laws, technical exceptions, and a shedload of paperwork involved in each case, it really pays to have an expert opinion that can add weight to your cause. For all of... Read More
How does cosmetic treatment impact hair alcohol and drugs tests
Cosmetic treatments: Hair is a robust sample for testing drugs and alcohol and has 3 morphological regions; the cuticle, cortex and medulla. The cuticle is the outer part of the hair, and it consists of a sheath of overlapping scale cells that protect the bulk of the hair, the cortex. The... Read More
How to avoid a false positive drug test and the factors that can cause it
A common question that the team at DNA Legal receive is what will cause a false positive drugs test? You may have read in one of our other blog posts the fact that that we’ve mentioned one of the flaws in drug testing is that there is such a thing as a ‘false positive’ if the laboratory does not... Read More