The new test focuses on a particular DNA region within the bacterium which the researchers says is present in all strains of the disease.Remember, this test is for active TB and could replace the sputum culture test.
Once a sample is taken, a scientific technique know as a "polymerase chain reaction" is used to amplify the volume of DNA available so that the genetic signature can be identified
As Peter Small and Madhukar Pai a recently noted, better diagnostics makes for a better health business
it is clear that improvements in diagnostics are driving a virtuous cycle in care: the promise of improved tests drives their uptake, their uptake results in better health outcomes, improved outcomes attract more funding for health care systems, and better-funded systems are an incentive to the development of even better technologies.