false negative


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false negative

n.
A test result that is false-negative.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

false negative

n
1. (Medicine) a result in a medical test that wrongly indicates the absence of the condition being tested for
2. (Medicine) a person from whom such a result is obtained
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The present study shows 45 cases with benign FNAC, concordance in 41 cases (True Negative) and discordance in four cases (False Negative) turnout as papillary carcinoma and 30 case with malignant FNAC, concordance in 28 cases (True Positive) two cases turnout as nodular colloid goiter with cystic degeneration (False positive).
(13) SNACC (12) researchers also found that those enrolled in Medicaid when surveyed are less likely to report false negatives.
However, recently conducted multi-institutional studies have reported false negative rates for SLN biopsy ranging from 5.5% to 16.7%4-7 which are higher than the target of <5% set in the 2005 guidelines of American society of clinical oncology2.
They had compared malaria tests results using RDTs with that using a microscope, the gold standard for malaria diagnosis, and found it actually gave false negative results.
* Verification in the second stage using the sophisticated human ventricular cardiac organoid chamber (hvCOC, or "human heart-in-a-jar"), an exclusive Novoheart technology whose three-dimensional architecture and best-in-class physiological readouts allow highly sensitive detection to avoid false negatives and positives
As a result, EBUS-TBNA was false negative in 8 of 31 (25.8%) lung cancer patients.
Monitoring the ion ratios will provide improved confidence in reporting analyte concentrations, avoiding false positives and false negatives, which have been reported in the literature [14].
Mogayzel Jr., "False negative cystic fibrosis newborn screen," Clinical Pediatrics, vol.
A false negative may occur when the drug is present in the sample but the detection limit of the method is too high, or when the actual concentration of the drug in the sample is very low.
In our study when it predicted good tubal patency, only one case of tubal occlusion was diagnosed by laparoscopy with chromopertubation (False positive rate= 11.11, PPV= 96.97%, likelihood ratio if test positive= 8.73], However, when the test showed nine cases of tubal occlusion, one case had tubal patency by laparoscopy with chromopertubation (False negative rate= 3.03, NPV= 88.89%, likelihood ratio if test negative= 0.03].
Table 2: False Positive and False Negative Results on ICT in this Study.
In the medical sciences, there are many measures used to calculate indices related to diagnostic accuracy are: sensitivity, specificity, false negative rate, false positive rate, overall accuracy, PPV, NPV, LR+, and LR-.