Needless Medical Tests Costly

Unnecessary Tests Ordered in 43 Percent of Checkups, Study Finds

(WebMD) 
Unfortunately, Schwartz says, his experience bears out Merenstein's findings.

"It happens all the time," he says. "The patient has no symptoms and doesn't smoke, but he gets a routine chest X-ray. If there is a small shadow, doctors are obligated to look further."

"That X-ray becomes a CT scan. That may show a small little nodule. The next thing you know, the patient ends up with a cardiothoracic surgeon who wants a needle biopsy, or even an open ," he says. "In a lot of these cases, he comes up with nothing, a benign nodule or something."

Aside from the costs in time and the potential for unnecessary suffering, these procedures add up to big money. Merenstein's modest estimate of the cost of just these three simple tests is $47 million to $194 million a year. And that doesn't include the cost of follow-up tests.

What to Tell Your Doctor

No doctor, Schwartz says, is ever completely free of worry that he or she might miss something. That, he says, is a major reason for unnecessary tests.

"I can't think of any doctor practicing today where the specter of missing something is not hanging over their heads. This is an underlying theme for everybody in practice," he says. "Unless patients push doctors and say, 'I heard these tests might not be recommended. Why are we doing them?' they may not respond to the message in the Merenstein study."

Doctors often have very good reasons to ask patients to give urine or have an electrocardiogram or X-ray. But don't just assume this is so, says Pedro Cazabon, M.D., a general internist at the Ochsner Clinic in New Orleans.

"If you're asked to undergo one of these tests, don't just refuse — ask your doctor, 'Are you looking for something specific, or is this just screening?' Cazabon tells WebMD. "These tests aren't for screening. But during a routine checkup, people often say something that raises a flag, and that makes you want to do some tests. This is completely different than using these tests to screen in the absence of symptoms."

Merenstein says the doctors, too, have a responsibility to tell patients what they are looking for.

"I don't think anyone should just tell a patient to urinate in a cup," he says. "It should be shared decision making. You should ask the reason for these tests during the visit. Or, if you later wonder why a test was done, you should call back. It should be a give and take. Patients and doctors should be open to talk about what we know and what we don't know. I think you get better medical care that way."

SOURCES: Merenstein, D. American Journal of Preventive Medicine, June 2006; vol 30: pp 521-527. Dan Merenstein, M.D., assistant professor and director of research, department of family medicine, Georgetown University, Washington. Robert Schwartz, M.D., professor and chair, department of family medicine and community health, University of Miami Miller School of Medicine. Pedro Cazabon, M.D., internal medicine, Ochsner Clinic, New Orleans.