A portal breath tester has been devised by the Israeli Scientists that detects lung cancer with an accuracy of 87 percent, according to a study.

The researchers reported in the journal Nature Nanotechnology that this device could be highly useful in detecting the cancer at an early stage before the tumors become visible in X-rays.

"Our results show great promise for fast, easy and cost-effective diagnosis and screening of lung cancer," they said.

The sensor uses gold nano-particles to identify the levels of volatile organic compounds (VOC), measured in a few parts per billion, which are elevated in lung cancer patients.

The odds of survival in such patients increase manifolds after an early detection of the cancer. Presently only 15 percent of the cases are detected before the disease has already begun spreading.

The methods undertaken for early detection presently are- screening via computerised tomography (CT) or chest x-rays. These are helpful but are heavy on the pocket.

The lung cancer biomarkers were found by comparing breath samples from 40 lung cancer patients and 56 healthy people. The results helped the scientists identify 42 VOCs present in the breath of 83 percent cancer patients as compared to a a little lesser than 83 percent healthy volunteers.

During the tests the device easily distinguished between simulated 'healthy' and 'cancerous' breath made from artificial compound mixtures.

Lung cancer claims about 1.3 million lives across the globe every year which makes 18 percent of the total deaths from cancer. This device could considerably reduce this figure very soon.