WHO calls for ban on 'unreliable' TB blood tests

The World Health Organisation warned on Wednesday that millions of blood tests conducted every year to diagnose tuberculosis are unreliable and putting patients' lives in danger.

"Based on the evidence, (these) tests lead to misdiagnosis and mistreatment of patients. They are a waste of time and resources," Mario Raviglione, director of the WHO Stop TB Department, told reporters.

"We are calling on governments to ban the use of these tests."

An estimated two million such diagnostics, which look for antibodies or antigens in the blood, are used every year, and up to half of them could give false results, Karin Weyer, who works for the same department, said.

She warned that companies which continued to sell these diagnostic tools would be knowingly selling a faulty product.

"This is now a matter of public record," she said, adding however that the WHO did not know how many deaths resulted from these unreliable tests, which started being released in the 1990s.

They are mostly manufactured by companies based in the developed world, including Australia, Britain, Canada, France, Germany, Italy and the United States, but also in emerging giants China and India.

A list of companies pinpointed by the WHO include US-based Mossman Associates, French group Anda Biologicals and British firm Omega Diagnostics.

"They cost the poor and vulnerable $10 to $30. And yet more often than not, the results are wrong," Raviglione said.

Other types of diagnostics, which cost between $16 and $28 give more reliable results, Raviglione said.

One of the reasons these tests are in the market is because of lack of regulations, Weyer explained.

"It's a multi-million dollar business centred on selling substandard tests with unreliable results.

"The market for these products is not in Europe or the US, but in developing countries.

"These companies just ship (the tests) to developing countries with weak or no regulatory framework," concluded Weyer.

According to the WHO website, there are some 9.4 million new cases of active TB and 1.7 million people who are killed by the transmissible disease every year.

jkc/hmn/ss

 

Voices
There will be a chance to bid for a rare example of the SAS Diary, collated by a former member of the regiment in the aftermath of World War II but only published – in a limited run of just 5,000 – in 2011
charity appealTime is running out to secure your favourite lot as our auction closes at 2pm tomorrow
Arts and Entertainment
James May, Jeremy Clarkson and Richard Hammond in the Top Gear Patagonia Special
tv
News
Claudia Winkleman and co-host Tess Daly at the Strictly Come Dancing final
people
Arts and Entertainment
Caroline Flack became the tenth winner of Strictly Come Dancing
tvReview: 'Absolutely phenomenal' Xtra Factor presenter wins Strictly Come Dancing final
PROMOTED VIDEO
Life and Style
ebookNow available in paperback
Life and Style
ebooksA superb mix of recipes serving up the freshest of local produce in a delicious range of styles
Arts and Entertainment
The Apprentice finalists Mark Wright and Bianca Miller
tvBut who should win The Apprentice?
News
news
Extras
indybest
News
Elton John and David Furnish will marry on 21 December 2014
peopleSinger posts pictures of nuptials throughout the day
Sport
Brendan Rodgers looks on from the touchline
SPORT
Life and Style
A still from the 1939 film version of Margaret Mitchell's 'Gone with the Wind'
life
Arts and Entertainment
J Jefferson Farjeon at home in 1953
booksBooksellers say readers are turning away from modern thrillers and back to golden age of crime writing
Latest stories from i100
Have you tried new the Independent Digital Edition apps?

ES Rentals

    Independent Dating
    and  

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

    iJobs Job Widget
    iJobs General

    Recruitment Genius: National Account Manager / Key Account Sales

    £30000 - £35000 per annum: Recruitment Genius: An opportunity has arisen for a...

    Recruitment Genius: Operations Manager

    £30000 - £35000 per annum: Recruitment Genius: An exciting opportunity to join...

    Recruitment Genius: Recruitment Consultant

    £30000 - £35000 per annum: Recruitment Genius: We have an excellent role for a...

    Recruitment Genius: IT Support Analyst - Bristol

    Negotiable: Recruitment Genius: An IT Support Analyst is required to join the ...

    Day In a Page

    The week Hollywood got scared and had to grow up a bit

    The week Hollywood got scared and had to grow up a bit

    Sony suffered a chorus of disapproval after it withdrew 'The Interview', but it's not too late for it to take a stand, says Joan Smith
    From Widow Twankey to Mother Goose, how do the men who play panto dames get themselves ready for the performance of a lifetime?

    Panto dames: before and after

    From Widow Twankey to Mother Goose, how do the men who play panto dames get themselves ready for the performance of a lifetime?
    Thirties murder mystery novel is surprise runaway Christmas hit

    Thirties murder mystery novel is surprise runaway Christmas hit

    Booksellers say readers are turning away from dark modern thrillers and back to the golden age of crime writing
    Anne-Marie Huby: 'Charities deserve the best,' says founder of JustGiving

    Anne-Marie Huby: 'Charities deserve the best'

    Ten million of us have used the JustGiving website to donate to good causes. Its co-founder says that being dynamic is as important as being kind
    The botanist who hunts for giant trees at Kew Gardens

    The man who hunts giants

    A Kew Gardens botanist has found 25 new large tree species - and he's sure there are more out there
    The 12 ways of Christmas: Spare a thought for those who will be working to keep others safe during the festive season

    The 12 ways of Christmas

    We speak to a dozen people who will be working to keep others safe, happy and healthy over the holidays
    Birdwatching men have a lot in common with their feathered friends, new study shows

    The male exhibits strange behaviour

    A new study shows that birdwatching men have a lot in common with their feathered friends...
    Diaries of Evelyn Waugh, Virginia Woolf and Noël Coward reveal how they coped with the December blues

    Famous diaries: Christmas week in history

    Noël Coward parties into the night, Alan Clark bemoans the cost of servants, Evelyn Waugh ponders his drinking…
    From noble to narky, the fall of the open letter

    From noble to narky, the fall of the open letter

    The great tradition of St Paul and Zola reached its nadir with a hungry worker's rant to Russell Brand, says DJ Taylor
    A Christmas ghost story by Alison Moore: A prodigal daughter has a breakthrough

    A Christmas ghost story by Alison Moore

    The story was published earlier this month in 'Poor Souls' Light: Seven Curious Tales'
    Marian Keyes: The author on her pre-approved Christmas, true love's parking implications and living in the moment

    Marian Keyes

    The author on her pre-approved Christmas, true love's parking implications and living in the moment
    Bill Granger recipes: Our chef creates an Italian-inspired fish feast for Christmas Eve

    Bill Granger's Christmas Eve fish feast

    Bill's Italian friends introduced him to the Roman Catholic custom of a lavish fish supper on Christmas Eve. Here, he gives the tradition his own spin…
    Liverpool vs Arsenal: Brendan Rodgers is fighting for his reputation

    Rodgers fights for his reputation

    Liverpool manager tries to stay on his feet despite waves of criticism
    Amir Khan: 'The Taliban can threaten me but I must speak out... innocent kids, killed over nothing. It’s sick in the mind'

    Amir Khan attacks the Taliban

    'They can threaten me but I must speak out... innocent kids, killed over nothing. It’s sick in the mind'
    Michael Calvin: Sepp Blatter is my man of the year in sport. Bring on 2015, quick

    Michael Calvin's Last Word

    Sepp Blatter is my man of the year in sport. Bring on 2015, quick