(DAILYMAIL) — A 15-year-old schoolboy could save millions of lives after he invented a new, low-cost test that can detect the early stages of a deadly form of cancer.

Jack Andraka from Crownsville, Maryland, developed a simple dip-stick test for levels of mesothelin, a biomarker for early stage pancreatic cancer found in blood and urine.

It promises to revolutionise treatment of the disease, which currently kills 19 out of 20 sufferers after five years – largely because its so difficult to detect until its final stages.