If you are over 50 years of age, have had GERD symptoms for five years or longer, have uncommon or concerning GERD symptoms, or your GERD symptoms do not dissipate with medication, your doctor may order further diagnostic tests. Learn about esophageal acid testing, barium swallow, Bernstein test and upper GI endoscopy, by taking this quiz.
How much do you know about how car engines work? And how much do you know about how the English language works? And what about how guns work? How much do you know? Lucky for you, HowStuffWorks is about more than providing great answers about how the world works. We are also here to bring joy to your day with fun quizzes, compelling photography and fascinating listicles. Some of our content is about how stuff works. Some is about how much you know about how stuff works. And some is just for fun! Because, well, did you know that having fun is an important part of how your brain works? Well, it is! So keep reading!