SAN ANTONIO, TX- Doctors have a new way to help diagnose and control asthma.
It's a device that conducts a different kind of test, and it only takes a couple of minutes.
Inflamed airways in asthmatic patients make it hard for them to breathe.
Now, some doctors are using a new tool to help pinpoint the condition.
It's called Aerocrine, and it measures exhaled nitric oxide.
When airways are swollen, patients produce higher levels of the molecule.
The device provides a measurement that can help diagnose asthma or see how well treatments are working.
