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Error leaves 55,000 diabetes patients needing new tests

At least 55,000 patients will be retested after faulty machines caused false positive diabetes results, leading to unnecessary medication and affecting under 10% of NHS labs, officials said.

  • NHS England confirmed that at least 55,000 people will need further blood tests after errors were discovered at one in ten NHS labs in England involving haemoglobin A1C tests.
  • Last year, the problem first emerged when Bedfordshire NHS Foundation Trust warned that 11,000 patients at Luton and Dunstable Hospital may have received higher blood glucose readings needing re-testing.
  • The faulty devices, supplied by Trinity Biotech, produced false positive-biased A1C readings, prompting the US and Ireland-based manufacturer and MHRA to issue three Field Safety Notices to 16 NHS hospital trusts in 2024.
  • NHS England says GPs and local hospitals will contact anyone needing repeat tests, while patients prescribed Metformin faced side effects, and Dr Clare Hambling stated it's "understandably worrying" but risk is low.
  • Last year’s diagnosis surge — 10,000 more cases — raised early alarm bells as type 2 diabetes diagnoses rose 4% more than expected and NHS England may identify additional affected patients.
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Daily News Update broke the news in on Thursday, September 4, 2025.
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