Sentences with phrase «false negative results»

Sometimes this test gives false negative results, though, because the virus «hides» in the cells and is not presents in the blood itself.
In addition, in some cases, testing may yield false negative results.
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.
There can be false negative results especially if you made the test too early.
With false negative results, on the other hand, it is possible to fill in the gaps.
Very early in the disease, the in - office test can give false negative results.
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.
Blood tests to detect Lyme frequently yield false negative results during the first few weeks after infection.
Hi Derinda, it sounds like you and your doctor may be relying on the TSH test, which is notorious for 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.
This is the case in what is called false negative results: the test looks normal but it is deceiving.
However false negative results have been documented, and PCR testing is not recommended if a patient has been sick for more than four days.
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.
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