Hair holds personal diary of drug-taking

THE LENGTH of your hair not only offers a fashion statement - it can also reveal whether you are a drug addict.

Last week, Europe's first commercial testing service to detect whether a person has been taking drugs by analysing hair opened in Britain.

Unlike urine samples, which detect substances taken in the last 48 hours, hair can reveal whether someone has been taking drugs in the past weeks and even months. It can also distinguish different types of narcotics and when they were taken.

Hair is made from cells which divide and mix with blood at the base of each follicle. Any drugs that are in the blood supply are trapped in the centre of the strand.

Scientists dissolve the hair samples and analyse them for traces of the drug's breakdown products. On average hair will grow at about 1cm a month, providing a personal drugs diary.

The technique has been available in the United States for several years, where it has been used to monitor and treat addicts on drug rehabilitation programmes.

It is also used by companies to detect drug abuse in employees or prospective employees. Some British firms have also used this method to vet their staff.

Supporters of the technique say it is much harder to evade - drug-abusers have been known to give old urine samples from bottles hidden on their body - is more accurate than urine samples, and is easy to collect.

The disadvantages are that some of the drugs can be washed out of hair with regular shampooing and about 15 per cent of a person's hair will stop growing at any one time, giving an old reading.

Future applications are expected to include tests in sport. The new clinic, Tricho-Tech, based at the Cardiff Medicentre, plans to offer analysis for a wide range of drugs, including cocaine, ecstasy and barbiturates. The technique was developed in the United States in the 1980s.

Suggested Topics
PROMOTED VIDEO
Have you tried new the Independent Digital Edition apps?
News
ebooksNow available in paperback
Arts and Entertainment
Joel Edgerton, John Turturro and Christian Bale in Exodus: Gods and Kings
film Ridley Scott reveals truth behind casting decisions of Exodus
News
Andy Murray with his girlfriend of nine years, Kim Sears who he has got engaged to
peopleWimbledon champion announces engagement to girlfriend Kim Sears
Arts and Entertainment
Jake Quickenden and Edwina Currie are joining the I'm A Celebrity...Get Me Out Of Here! camp
tv
Arts and Entertainment
Roisin, James and Sanjay in the boardroom
tvReview: This week's failing project manager had to go
Life and Style
Fright night: the board game dates back to at least 1890
life
Life and Style
fashion
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Argyll Scott International: Senior Business Analyst- Insurance

Negotiable: Argyll Scott International: Senior Business Analyst - Insurance ...

Recruitment Genius: Property Manager

£25000 - £29000 per annum: Recruitment Genius: This independent, growing Sales...

Recruitment Genius: Graphic Designer

£16000 - £20000 per annum: Recruitment Genius: Multi-skilled graphic designer ...

Austen Lloyd: Court of Protection Solicitor

£30000 - £50000 per annum + EXCELLENT: Austen Lloyd: Court of Protection Solic...

Day In a Page

Cameron, Miliband and Clegg join forces for Homeless Veterans campaign

Cameron, Miliband and Clegg join forces for Homeless Veterans campaign

It's in all our interests to look after servicemen and women who fall on hard times, say party leaders
Millionaire Sol Campbell wades into wealthy backlash against Labour's mansion tax

Sol Campbell cries foul at Labour's mansion tax

The former England defender joins Myleene Klass, Griff Rhys Jones and Melvyn Bragg in criticising proposals
Nicolas Sarkozy returns: The ex-President is preparing to fight for the leadership of France's main opposition party – but will he win big enough?

Sarkozy returns

The ex-President is preparing to fight for the leadership of France's main opposition party – but will he win big enough?
Is the criticism of Ed Miliband a coded form of anti-Semitism?

Is the criticism of Miliband anti-Semitic?

Attacks on the Labour leader have coalesced around a sense that he is different, weird, a man apart. But is the criticism more sinister?
Ouija boards are the must-have gift this Christmas, fuelled by a schlock horror film

Ouija boards are the must-have festive gift

Simon Usborne explores the appeal - and mysteries - of a century-old parlour game
There's a Good Girl exhibition: How female creatives are changing the way women are portrayed in advertising

In pictures: There's a Good Girl exhibition

The new exhibition reveals how female creatives are changing the way women are portrayed in advertising
UK firm Biscuiteers is giving cookies a makeover - from advent calendars to doll's houses

UK firm Biscuiteers is giving cookies a makeover

It worked with cupcakes, doughnuts and macarons so no wonder someone decided to revamp the humble biscuit
Can SkySaga capture the Minecraft magic?

Can SkySaga capture the Minecraft magic?

It's no surprise that the building game born in Sweden in 2009 and now played by millions, has imitators keen to construct their own mega money-spinner
The King's School is way ahead of the pack when it comes to using the latest classroom technology

Staying connected: The King's School

The school in Cambridgeshire is ahead of the pack when it comes to using the latest classroom technology. Richard Garner discovers how teachers and pupils stay connected
Christmas 2014: 23 best women's perfumes

Festively fragrant: the best women's perfumes

Give a loved one a luxe fragrance this year or treat yourself to a sensual pick-me-up
Homeless Veterans Christmas Appeal: Drifting and forgotten - turning lives around for ex-soldiers

Homeless Veterans Christmas Appeal: Turning lives around for ex-soldiers

Our partner charities help veterans on the brink – and get them back on their feet
Putin’s far-right ambition: Think-tank reveals how Russian President is wooing – and funding – populist parties across Europe to gain influence in the EU

Putin’s far-right ambition

Think-tank reveals how Russian President is wooing – and funding – populist parties across Europe to gain influence in the EU
Tove Jansson's Moominland: What was the inspiration for Finland's most famous family?

Escape to Moominland

What was the inspiration for Finland's most famous family?
Nightclubbing with Richard Young: The story behind his latest book of celebrity photographs

24-Hour party person

Photographer Richard Young has been snapping celebrities at play for 40 years. As his latest book is released, he reveals that it wasn’t all fun and games
Michelle Obama's school dinners: America’s children have a message for the First Lady

A taste for rebellion

US children have started an online protest against Michelle Obama’s drive for healthy school meals by posting photos of their lunches