Blood and urine tests advance early detection of Alzheimer's and bladder cancer

· Science

Two studies reported advances in detecting disease with simple fluid tests, though they concern separate conditions. A major international study found that a simple blood test could help predict Alzheimer's-related cognitive decline years before symptoms appear, with the highest-risk individuals facing a 38% chance of impairment within five years and an estimated 78% chance within 10 years. Separately, researchers reported a proof-of-concept test that analyzes fragments of RNA in urine to detect bladder cancer. Both approaches aim to offer less invasive alternatives to current diagnostic routes; the Alzheimer's findings concern prediction of decline, while the urine test concerns cancer detection. Neither item reports regulatory approval or routine clinical use, and the bladder test is described only as proof of concept.

Why it matters：Simple fluid tests for Alzheimer's risk and bladder cancer point toward earlier, less invasive diagnosis, which could reshape screening and referral pathways if validated.

Key points

  • Highest-risk group had a 38% chance of impairment within five years
  • Estimated 78% chance of impairment within 10 years
  • The bladder cancer test analyzes RNA fragments in urine

Sources (original reporting)

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