What I do know is that these are false positives.

There's going to be a lot of false positives down here.

And it has been my experience that some companies get more false positives than others.

In 2005, a step was added to the test to help prevent false positives.

Some of the test results are later found to be false positives using more specific testing.

Of those, all but four were eliminated as almost certainly being false positives.

The results are available within 48 hours, but the screen can produce false positives.

As for all those worries about false positives and the quality of evidence?

"We think companies lose $3 billion dealing with false positives."

Furthermore, the approach results in a large number of false positives.

The test has a poor positive predictive value with false-positive results in as many as 30% of cases.

Harms are also increased in younger women because they have a higher rate of false-positive results.

The skill of the doctor also can affect the chance of a false-positive result.

There can be false-positive results, indicating a problem when the child is actually healthy.

Test results can be difficult to interpret because of the false-positive results.

And the chance of having false-positive results is higher when you start having mammograms earlier.

Thus, in young women, the test would yield many false-positive results.

Nine percent of regular screening attendees had at least one false-positive result.

The triple and quad tests may show a chance of a problem when there isn't one (false-positive result).

A false-positive result is more and more likely the closer a woman gets to age 40.