Smartphones allow do-it-yourself stress hormone tests

NEW YORK: The next addition to the collection of health apps coming online for smartphones may be a stress test, researchers said at a recent conference. 

With a simple tube, some software and a saliva sample, people and their doctors can measure levels of the stress hormone cortisol, according to new research presented last week at ICE/ENDO 2014, the joint meeting of the International Society of Endocrinology and the Endocrine Society in Chicago.