Home / One dollar blood test using gold nanoparticles outperforms PSA screen for prostate cancer, study suggests  
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A test that uses gold nanoparticles to detect early-stage prostate cancer costs less than $1, returns results in minutes and is more accurate than standard PSA screening, pilot studies show. The new technique leverages the ability of gold nanoparticles to attract cancer biomarkers.

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I am driven by two philosophies: know more about the world than I did yesterday and lessen the suffering of others. You'd be surprised how far that gets you. - Neil deGrasse Tyson