false-positive

However, quite often people who did not have hepatitis C showed a positive antibody for the virus when they took this test this is called a false-positive result.

DR. SANJIV CHOPRA’S LIVER BOOK Sanjiv Chopra 2001

Specifically, 45% of the women polled said the task force pushed back the recommended age to 50 to reduce health-care costs and avoid administering unnecessary tests, while 30% believe the task force made the recommendation because excessive tests produced too many so-called false-positive results, leading women to unnecessarily think they had cancer when they did not.

Poll shows women in their 40s want mammograms, despite task force recommendations 2011

Specifically, 45% of the women polled said the task force pushed back the recommended age to 50 to reduce health-care costs and avoid administering unnecessary tests, while 30% believe the task force made the recommendation because excessive tests produced too many so-called false-positive results, leading women to unnecessarily think they had cancer when they did not.

Poll shows women in their 40s want mammograms, despite task force recommendations 2011

The initial screening for Downs, for instance, has a very high false-positive rate, which then results in an amnio, which is still rather risky.

Pregnant at 66 and putting choice in context - Feministing 2009

One drawback: The rats turn up many false-positive findings of TB, so the results need to be confirmed by conventional lab methods.

The Newest Recruit In the Fight on TB Frances Robinson 2011

The authors comment, “... false-positive results on HIV RNA assays require follow-up testing and extensive post-test counseling and are associated with substantial psychological distress.”

The Volokh Conspiracy » San Jose State University Continues to Suspend All Blood Drives on Campus 2010

But the AD8 was more likely to give false-positive findings.

Family, friends may detect early Alzheimer's better than traditional test 2010

They were surprised at how knowledgeable I was about the procedure and the false-positive rates and the risks of amnio, etc.

Pregnant at 66 and putting choice in context - Feministing 2009

People email us all the time asking about the false-positive AutoHotkey apps we host on the site, and we do our best to reply.

How Do You Know If Your Download Really Has A Virus? | Lifehacker Australia 2010

The findings suggest the best strategy for discovering lung tumors in an early, more treatable stage is screening with more-costly CT scans, which were shown in a separate recent study to lower the death rate by 20% despite a high percentage of false-positive results.

X-Rays No Help Against Lung Cancer Ron Winslow 2011