Clinical examination and imaging technologies are critical elements for detecting and diagnosing breast cancer, yet the high rate of false positives and
false negatives resulting from these approaches can significantly impact patient care.
The high number
of false negative results found in the study implies a risk that athletes who use rHuEpo will avoid detection and damage the fundamental goal of fair competition.
Bear in mind that the antigen test often gives
false negative results if there are fewer than four adult female worms in the dog's body.
The documents also suggest that the officials knew that the Pasteur test was not ready for the market at this stage, because it was still giving too
many false negative results.
Most false negative results occur when levels of human chorionic gonadotropin (hcg) in the urine are too low for the test to detect pregnancy.
Health authorities say the number
of false negative results from the tests is probably small but AIDS hotlines were jammed last week with inquiries from people worried by the implications.
Because only about 16 in every 100,000 people end their own lives, a test with such a level of accuracy will give many false positive and
false negative results if used on the general population.
Vicky Phelan's
false negative result has shown yet again the state's cavalier attitude towards women's health issues
For the Irish government, the timing couldn't be worse.
This lower rate of
false negative results is a key benefit of the HPV screening.
The analyzer did not produce
any false negative results.
In addition, the nasal brushings produced
no false negative results in 45 disease - free controls, Caughey says.
And such errors can lead to false positive and
false negative results.
In fact, the FDA has been cracking down on some services in recent years, pointing out the health risks posed by possible false positive or
false negative results.
«We don't really know the active ingredients; there can actually be something in a supplement that gives false positive or
false negative results.»
It's important to note that there's a 30 % chance that the antibody tests to diagnose Hashimoto's will present an indecisive or
false negative result, causing many Hashimoto's cases to go undiagnosed for years.
While unlikely, this test may provide false positive or
false negative results.
You may otherwise get
a false negative result, especially with candida, bacteria and parasites.
Conventional testing for gluten sensitivity misses many important markers and can give
you a false negative result.
Dogs with less than five adult heartworms will not have enough antigen to turn the test positive, so there may be
some false negative results in early infections.
Since the test detects mature female heartworms,
false negative results can occur in immature infections and in male - only infections, two conditions that are common in feline heartworm disease.
There is a window period of six to seven months where the test may reveal
a false negative result.
However, it usually takes eight to 12 weeks after infection for detectable levels of antibody to appear in the bloodstream, so testing performed during this interval may result in
false negative results.
For years, I evaluated and diagnosed pets with in - house fecal flotation with centrifugation but always saw variability in my test results, misdiagnosis of parasites, and
false negative results.
This gives
a false negative result.
With small litters (less than three puppies)
false negative results may occur.
It is important to realize that these tests may have
false negative results.
Positive means yes, negative means no (or less than four adult female worms -
false negative results can occur when worm burdens are this low).
However, dogs with less than 5 adult worms may not have enough antigen to produce a positive test result, giving
a false negative result.
A blood test can confirm heartworm disease but early infection may yield
a false negative result so repeating diagnostic testing months later is sometimes recommended.
This test can give false positive and
false negative results.
Dogs harboring less than five adult heartworms will not have enough antigens to turn the test positive, so there may be
some false negative results in early infections.
And
a false negative result might allow precancerous cells to develop into cancer if they are not detected in a future round of Pap testing.