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Normal Test Results are Often Not Reassuring

[additional-authors]
March 1, 2013

Every primary care doctor has been faced with this situation. A patient reports vague symptoms and is very worried that they are a sign of a catastrophic illness. The symptoms aren't even slightly suggestive of the disease the patient is worried about, but the patient’s neighbor’s brother-in-law was just diagnosed with the same disease, and so the patient is pretty sure that he has it too. The doctor is not at all suspicious that the patient has this disease. The doctor believes that the patient is simply anxious, and that his symptoms are either caused by his anxiety or are normal bodily sensations that are being magnified and given lots of attention because of the news about the neighbor’s brother-in-law.

What can the doctor do? One option is to order a test – a CT, a MRI, blood tests, whatever would rule out the specific disease the patient is worried about. The doctor is not ordering the test because he is actually curious about the results. He thinks the probability of an abnormal result is extremely low. He is ordering the test simply in the hopes that a normal result will reassure the patient, decrease the anxiety, and maybe even lead to the resolution of the symptoms by letting the patient focus on something else.

The temptation to order the test is pretty great (especially if the doctor owns the testing equipment). But will it work? Will the normal test result fix the problem?

A ” target=”_blank”>that screening for most diseases is not helpful. One of the reasons is that no test is perfect. If the likelihood that the disease is present is extremely small, an abnormal test is more likely to be caused by an test error than by the disease being present. So testing patients that are almost certainly healthy raises the possibility of false positives due to test errors. That won’t reassure anyone and will likely lead to more tests to pursue the spurious abnormal result.

Doctors need to learn to say to patients “That doesn't sound worrisome. Let’s just keep an eye on it.” without being dismissive. Patients need to learn that a system that pays more for testing than listening will deliver more testing than listening.

Learn more:

” target=”_blank”>'Worried Well' Often Ignore Negative Test Results: Study (US News)
” target=”_blank”>Doctor, Test Me for Everything (My post from last year explaining why some screening tests are harmful)

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