DBT is associated with fewer false positive
exams in the screening setting, but there is limited research on the impact of DBT on false positive
exams in the diagnostic setting.
9) The odds of a false positive
vary, depending on the specificity of the immunoassay used and the substance under detection.
A recent "Commentary" article in the journal Nature highlights the prevalence and negative impact of false-positive publications and discusses strategies to avoid reporting false positives
as novel findings (1).
By adopting effective False Positive
Reduction mechanisms and regularly enhancing their AML systems, institutions can achieve acceptable rates of False Positives
as they comply with risk regulations," said Hazem Mulhim, CEO, EastNets.
One can arrive at the relative costs by deciding how many false positives
one will accept for every false negative, or equivalently, how many false negatives one will accept for every false positive
Hospitals' initial urine- screening drug tests on pregnant women can produce a high rate of false positives
-- particularly for methamphetamine and opiates -- because they are technically complex and interpretation of the results can be difficult, some experts say.
Counselors continued to explain to patients that any reactive rapid tests required Western blot confirmation but also emphasized that discordant oral fluid and whole-blood test results were likely to be false positive
The extra expense results from the high number of harmless anomalies, or false positives
, that scans turn up and that doctors must then check out (SN: 9/20/03, p.
results may cause applications to be postponed until other additional requirements are met or may otherwise result in adverse actions being taken--both outcomes tend to cause some applicants who would otherwise present good risks to take their business elsewhere, resulting in good business lost.
These systems generate too many false alarms, known as false positives
The real problem is in deciding how precautionary to be in the face of inevitable uncertainties, demanding that we understand the equally inevitable false positives
and false negatives from screening evidence.
can occur with viral load tests, but a review of the data in the August, 1999 American Family Physician (1) suggests it is usually possible to differentiate these from the real thing: "During the symptomatic phase of acute HIV infection, the viral RNA shows in excess of 50,000 copies per mL.