Sentences with phrase «test was a false positive»

Further testing would need to be done to determine if Naomi had classic or Duarte galactosemia, was simply an unaffected carrier, or if the test was a false positive — common in the summer months when Naomi was born.

It's possible that Billy's FIV test was a false positive.

Not exact matches

The national cost of false - positive tests and overdiagnosed breast cancer is estimated at $ 4 billion a year, according to a 2015 study in Health Affairs.

A new genetic test that analyzes the free DNA floating in a pregnant woman's blood was proven to be more effective at predicting chromosomal disorders compared with standard screening tests, due to its much smaller incidence of false - positive results.

THE BIOPSY»S DANGEROUS CASCADE: HOW TO LESSEN THE NEED FOR INVASIVE TESTING Intervention Track Hosted By: Insigniam Current medical tests are too often marred by high rates of overdiagnosis («false positive» results) or they too often miss the danger altogether («false negatives»).

Unless you think the amounts of the decay element are varying just the right amount to give a false positive to highly repeatable tests and calibrations from samples all over the world (and beyond with meteorites), then you are wrong.

Christian disbelief is, instead, a positive testing of what is true and false by a single criterion: «By this you know the Spirit of God: every spirit which confesses that Jesus Christ has come in the flesh is of God, and every spirit which does not confess Jesus is not of God» (1 John 4:2 — 3).

This study leaves open the question of whether the green tea tested in this study is contaminated with gluten or if something in the green tea is causing false positive results.

Fearful of a mass drug - test failure — poppy seeds are said to cause false positives — Chimello ordered flight attendants to replace the offending rolls with unseeded ones.

When the SCAT2 was issued, superseding the original SCAT published in 2005, the authors recommended continued reliance on the SAC until prospective studies could be conducted to assess the SCAT2's sensitivity (how good the test is in identifying athletes with concussion; for example, a test which is very sensitive will have few false negatives, rarely missing those later found to have concussion) and specificity (a test with high specificity will have few false positives, rarely mis - classifying people without concussion as having concussion).

Despite the name, a chemical pregnancy is not a false pregnancy or a false positive on a pregnancy test.

The only medications really known to cause false results, false positives specifically, are those medications containing hCG In these cases, your doctor or fertility center will tell you not to take a pregnancy test until these medications have cleared your system.

A positive blood or urine pregnancy test is considered probable, as the test is not 100 percent positive, it can be false positive.

There are different ways to test for Down syndrome screening but the Integrated Test is the most specific, has the highest detection rate and a low false - positive rtest for Down syndrome screening but the Integrated Test is the most specific, has the highest detection rate and a low false - positive rTest is the most specific, has the highest detection rate and a low false - positive rate.

False positive tests are more frequent when screening cards are expired.

Rather than being «confirmed,» they were «validated» through a series of simpler follow - up observations and complex statistical tests designed to rule out false positives.

«New tests are more exact and are not as susceptible to the same false - positive or false - negative results associated with current tests,» said Schutzer.

Because ovarian cancer is relatively rare, occurring in approximately one out of every 2,500 women, a test with only 99 percent specificity would result in false - positive diagnoses for 25 women, leading to unnecessary and risky surgeries and procedures.

If you're testing a long shot, say with a 10 percent chance of being effective, the false positive risk for a P value of.05 is 76 percent.

Though they can't tell for sure from the data, the researchers say this suggest that patients who had the thallium scans were sent for further testing using the invasive angiography technique because the initial scan gave a false positive for serious blockage.

Dr. Catalona, who was the first physician in the U.S. to run the phi test, added, «However, the problem is that higher levels of PSA can also be caused by a benign enlargement or inflammation of the prostate, leading to many false ‐ positives for cancer and ultimately unnecessarily invasive biopsies and an increased potential for patient harm.»

More work is needed to refine the tests so that they can detect tinier amounts of target molecule, and ensure the rates of false positives and negatives meet the standards required for diagnostic tests.

«Such a high rate of a false positives in this particular study was unexpected,» says Tandy - Connor, who believes that some of the discrepancies in the results can be explained by technical differences between the various testing methods used.

As the authors note, the blood test's» accuracy may be even higher as some of the «false positives» — healthy cases mischaracterized as AD — may be from subjects who are actually positive for pre-symptomatic manifestations of Alzheimer's.

While there are a number of portable tests for cocaine commercially available, these are mainly based on antibody reagents, which can not offer quantitative data and — since the cocaine antibody can bind to something that is not cocaine — can give false positive results.

In an editorial also published in the July 1 issue of Annals of Internal Medicine, Dr. George Sawaya and Dr. Vanessa Jacoby of the Department of Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco write, «The pelvic examination has held a prominent place in women's health for many decades and has come to be more of a ritual than an evidence - based practice... With the current state of evidence, clinicians who continue to offer the examination should at least be cognizant about the uncertainty of its benefits and its potential to cause harm through false - positive testing and the cascade of events it prompts.»

The test is much less accurate for Edward syndrome and Patau syndrome, however, with respective detection rates of about 96 % and 92 % and a false positive rate of 0.26 %.

The test will also produce false positives that frighten parents into thinking their child will have a disability when in fact he or she will be healthy.

The team reports that the test must be further refined before it will be applied to the general population, because screening strategies for early detection should have specificities greater than 99.6 percent in order to avoid false positive diagnoses.

The blood tests, used on at least 2 million people a year, are wrong 50 % of the time, says WHO, yielding either false positives or negatives, both of which are dangerous.

As a result, blood tests may be detecting the presence of other mycobacterial infections; they may also produce false positives when antibody levels remain elevated after cases of TB have been treated.

«Extrapolating our findings, our extremely conservative estimate is that there were 1.7 million individuals with a false - positive cardiac biomarker test in the U.S. over those two years,» Dr. Makam said.

The scientists deem false - positive tests to be particularly critical as they may erroneously report infections in women.

The new NIST human genome RMs increase the ability of DNA sequencing laboratories to be more confident in their reporting of true positives, false positives, true negatives and false negatives, and therefore, significantly improve genetic tests used for disease risk prediction, diagnosis, and progression tracking.

«This study has shown that the main advantage of cfDNA testing, compared with the combined test, is the substantial reduction in false positive rate.

In addition to the huge hit to your wallet, there's also the potential harm of false positives, and just because a test has traditionally been done for a condition doesn't mean it's the best way to treat it.

It's highly likely, however, that you have fallen victim to a false positive — a result that, despite the accuracy of the test, erroneously yields an affirmative result that points toward illness.

The assay — when compared against the performance of the conventional ELISA — has proved to be «up to clinical standards,» according to the researchers, with the added ability of removing the false positives, thereby eliminating the need for repeated testing.

While the result is false, the psychological toll is real, and so are the billions of dollars spent every year on tests and procedures performed as a result of false positives.

«Our method would be an effective low - cost addition to a battery of tests helping to lower the false positive rate since it provides 10 % better sensitivity and specificity than any other screening method, including Pap and HPV tests,» says Huang.

Results from these tests provide also in many cases insights into the nature of the sources of the false positives, which are generally produced by one of several kinds of configurations involving eclipsing binaries (EB).

Because of these false positives, a sequence of tests - as originally outlined by Alonso et al. (2004)- is employed, beginning with detailed revisions of the detection light - curves, and continuing for surviving candidates with follow - up observations, to either reject them from the list of planetary candidates or to verify their planetary nature.

Available data suggest few SNP alleles can pass the genome - wide multiple testing criteria and the false positive rate is very high.

A suite of diagnostic tests is performed on all candidates to aid in discrimination between genuine transiting planets and instrumental or astrophysical false positives.

Perhaps the tests were giving false positives, or picking up floating DNA from dead parasites?

One common cause of false positives are so - called «high - risk» lesions that appear suspicious on mammograms and have abnormal cells when tested by needle biopsy.

On the plus side, Aisner points out, testing via circulating tumor DNA returns very few false - positives — when a test discovers DNA with a cancer - causing genetic change, it is strong evidence that this alteration is, in fact, present in the patient's cancer.

She worries that it can yield too many false positive or false negative test results, creating either unnecessary emotional turmoil or unwarranted relief, when there really should be extra attention and care.

April 10, 2018 - The technology is proven to be up to 40 percent more accurate than 2D mammography in locating invasive cancers, as well as reducing false - positive findings and the need for additional tests.

The NPR story reported that another recent study found that the false - positive rate for lung CT (computerized tomography) is 33 percent among those who have had two screening tests — higher than the National Cancer Institute trial found.