Reflux Diagnostic Evaluation

Acid reflux is a condition. Heartburn is a symptom, and symptoms are unreliable narrators. Some people burn constantly with a normal esophagus. Others have real injury and feel very little. Treating the symptom without measuring the cause is how people end up on acid suppression for years without ever learning whether they needed it.

An evaluation replaces assumption with information. It establishes whether acid is actually reaching the esophagus, whether the lining has been damaged, and whether the muscle that moves food down is working. Those three findings, taken together, point to a treatment. Without them, any plan is a guess.

This matters most for the people considering a procedure. No operation or endoscopic treatment for reflux should be planned on symptoms alone. The testing is what makes the recommendation defensible.

The first appointment is a conversation, not a test. It maps what you feel, when you feel it, what makes it worse, what you have already tried, and what happened when you tried it. Response to acid suppression is itself a piece of data.

Bring the list of medications you take, including anything over the counter, and any prior endoscopy or imaging reports. Prior studies frequently change what is ordered next, and repeating a test that was already done well helps nobody.

By the end of that visit you should know which tests are being ordered and why each one is on the list.

Endoscopy is a direct look. A flexible scope passes through the mouth into the esophagus and stomach while you are sedated, and the lining is examined for inflammation, narrowing, a hiatal hernia, or the tissue change called Barrett's esophagus. Biopsies can be taken during the same procedure.

Endoscopy answers the damage question well and the acid question poorly. A normal endoscopy does not mean there is no reflux. It means the lining looks healthy, which is useful and reassuring but incomplete on its own.

pH testing measures acid in the esophagus over time, usually across 24 to 96 hours, and links each episode to what you were doing. That is the test that separates true acid exposure from symptoms that come from somewhere else.

Impedance testing extends the measurement to material that is not acidic, which matters when symptoms persist on medication or when the main complaint is regurgitation, cough, or throat irritation rather than burning.

Whether you stay on or come off acid suppression before testing depends on the question being asked, and you will be told which applies to you.

Manometry measures the pressure waves the esophagus generates when you swallow and how the valve at the bottom behaves. It is the test that identifies a motility disorder hiding behind reflux symptoms.

It is also a planning test. If a procedure is under discussion, knowing how well the esophagus clears itself changes what is appropriate. A barium swallow may be added when anatomy, narrowing, or a large hiatal hernia needs to be seen in motion.

The review visit is where the pieces are assembled. A normal esophagus with proven acid exposure is one situation. Visible injury with a large hiatal hernia is another. Typical symptoms with no measurable acid at all is a third, and that third result changes the plan entirely, usually away from reflux treatment and toward the real cause.

Most people do not need every test. The sequence is chosen for the question in front of us, and each result decides whether the next test is worth doing.

This page is educational information, not medical advice. What is right for you is decided in consultation, after a review of your history, your symptoms, and your testing.