An endoscope is used by The doctor to add the bean-sized capsule to the esophagus. The capsule methods pH levels and delivers readings by radio wave to a receiver you use on your belt. After about 48 hours, the capsule detaches and passes harmlessly through your digestive system.. Aren’t there any lab tests for heartburn? If it is obvious from the symptoms a person has heartburn, no tests or exams could be necessary. Advice in regard to lifestyle modifications, diet plan, or medications can start immediately. If your health care professional is not sure about the medical diagnosis, or if she or he is concerned about harm done by chronic acid reflux, tests may be ordered.A needle is certainly inserted right into a vein and bloodstream is withdrawn and gathered in a vial or syringe. Following the procedure, the rubber band is removed. After the bloodstream has been collected, the needle is removed and the certain area is covered with cotton or a bandage to avoid the bleeding. Collecting blood because of this test will only have a few minutes. BackContinueWhat to Expect Either method of collecting an example of blood is temporarily uncomfortable and will feel like an instant pinprick. Afterward, there might be some moderate bruising, that ought to go away in just a few days.