One dollar blood test using gold nanoparticles more effective than PSA test in prostate cancer detection.

Prostate Cancer Detection with gold nanoparticles

A new study published in ACS Applied Materials & Interfaces concluded that a test using gold nanoparticles to detect early stage prostate cancer costs less that $1, has results in minutes and is more accurate than standard PSA screening. The gold particles attract cancer bio markers. The researchers test detects the immune response that the body produces in response to the development of a tumor. The gold nanoparticles are about 10,000 times smaller than a freckle.  When blood from a finger prick is mixed with the gold nanoparticles, certain cancer biomarkers cling to the surface of the tiny particles. increases their size and causes them to clump together. In the test they are able to measure the size of the particles by analyzing the light thrown off and the size reveals whether or not the patient has prostate cancer and how advanced it may be. Researchers said “Whats different and unique about our technique is it’s a very simple process, and the material required for the test is less than $1. And because it’s low cost, we’re hopinf most people can have this test in their doctor’s office. If we can catch this cancer in its early stages, the impact is going to be big.”

Evaluation of the test determined at 90 to 95 percent that it is not false positive, and with 50% confidence that it is not false negative which is higher than the PSA confidence in false positive at 20%. More research is planned with the eventual goal of hqving a simple, cheap test for various cancer types.

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