"In short it’s an excellent service. I attended the Manchester branch after requesting a D&A test at short notice. I’ve had many D&A tests, in many countries around the world, for about the past 30-years as a part of my job. This was the fastest, most efficient process I’ve encountered. From booking in, payment, admin, sampling and results it was flawless throughout.."

"Very efficient. I was unexpectedly early for the appointment but was allowed to take the tests an hour early much to my surprise and pleasure. The results came through on time and the US customer accepted the results without question. So all in all an excellent service.."

"Used Crystal Health Group as we wanted to do a random drugs test on our employees as we work in a no tolerance industry. Very professional from start to finish and very reasonably priced. If we need to use again in the future this will be the group I go to. Would recommend."