False negative results in testosterone doping in forensic cases: sensitivity of the urinary detection criteria T/E and T/LH.
Sign Up to like & getrecommendations! Published in 2021 at "Drug testing and analysis"
DOI: 10.1002/dta.3125
Abstract: At the Swedish national forensic toxicology laboratory, a measured testosterone/epitestosterone (T/E) ratio ≥12 together with testosterone/luteinizing hormone (T/LH) in urine >400 nmol/IU is considered as a proof of exogenous testosterone administration. However, according to the… read more here.
Keywords: detection; results testosterone; false negative; testosterone ... See more keywords
A word of caution in interpreting COVID‐19 diagnostics tests
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Medical Virology"
DOI: 10.1002/jmv.26531
Abstract: To the Editor, Since the emergence of SARS‐CoV‐2, many diagnostic tests including molecular and serological assays have been developed and approved by the Food and Drug Administration (FDA) for diagnosis of COVID‐19. However, concerns about… read more here.
Keywords: diagnostic test; word caution; false negative; diagnostic tests ... See more keywords
Extending the susceptible‐exposed‐infected‐removed (SEIR) model to handle the false negative rate and symptom‐based administration of COVID‐19 diagnostic tests: SEIR‐fansy
Sign Up to like & getrecommendations! Published in 2022 at "Statistics in Medicine"
DOI: 10.1002/sim.9357
Abstract: False negative rates of severe acute respiratory coronavirus 2 diagnostic tests, together with selection bias due to prioritized testing can result in inaccurate modeling of COVID‐19 transmission dynamics based on reported “case” counts. We propose… read more here.
Keywords: diagnostic tests; false negative; susceptible exposed; exposed infected ... See more keywords
Addition of frontal EEG to adult home sleep apnea testing: does a more accurate determination of sleep time make a difference?
Sign Up to like & getrecommendations! Published in 2018 at "Sleep and Breathing"
DOI: 10.1007/s11325-018-1735-2
Abstract: RationaleHome sleep apnea testing (HSAT) typically does not include electroencephalogram (EEG) monitoring for sleep assessment. In patients with insomnia and low sleep efficiency, overestimation of the sleep period can result from absence of EEG, which… read more here.
Keywords: false negative; sleep; sleep apnea; frontal eeg ... See more keywords
Multidimensional analysis of clinicopathological characteristics of false-negative clinically significant prostate cancers on multiparametric MRI of the prostate in Japanese men
Sign Up to like & getrecommendations! Published in 2018 at "Japanese Journal of Radiology"
DOI: 10.1007/s11604-018-0801-9
Abstract: PurposeTo clarify clinicopathological features of false-negative clinically significant prostate cancer (csPC) at multiparametric prostate MRI (mpMRI).Methods95 patients with 139 csPC undergoing 3T mpMRI before radical prostatectomy were included. Two radiologists were independently evaluated mpMR images… read more here.
Keywords: prostate; negative clinically; significant prostate; clinically significant ... See more keywords
Thyroid nodules over 4 cm do not have higher malignancy or benign cytology false-negative rates
Sign Up to like & getrecommendations! Published in 2019 at "Endocrine"
DOI: 10.1007/s12020-019-01964-3
Abstract: PurposeWhether thyroid nodules 4 cm or larger with benign cytology carry a higher risk of malignancy, and should be managed differently than smaller nodules remains controversial. We aimed to evaluate the malignancy rate and benign cytology… read more here.
Keywords: thyroid nodules; cytology false; benign cytology; false negative ... See more keywords
Necessity to critically review the automatic results of the Xpert Flu assay
Sign Up to like & getrecommendations! Published in 2017 at "Diagnostic Microbiology and Infectious Disease"
DOI: 10.1016/j.diagmicrobio.2017.01.015
Abstract: Abstract While using the Xpert Flu assay we became aware of false-negative results. The study aimed to analyze the causes of these false-negative results. One hundred fifty-nine respiratory specimens were tested in the Xpert Flu… read more here.
Keywords: specimens tested; false negative; xpert flu; negative results ... See more keywords
A cautionary tale of false-negative nasopharyngeal COVID-19 testing
Sign Up to like & getrecommendations! Published in 2020 at "IDCases"
DOI: 10.1016/j.idcr.2020.e00791
Abstract: Abstract There remains diagnostic uncertainty regarding the sensitivity of reverse transcription polymerase chain reaction in detection of SARS-CoV-2 from nasopharyngeal specimens. We present a case where two nasopharyngeal specimens were negative, followed by a positive… read more here.
Keywords: negative nasopharyngeal; nasopharyngeal; false negative; covid ... See more keywords
False-negative rate of SARS-CoV-2 RT-PCR tests and its relationship to test timing and illness severity: A case series
Sign Up to like & getrecommendations! Published in 2022 at "IDCases"
DOI: 10.1016/j.idcr.2022.e01496
Abstract: OBJECTIVE To determine the false-negative rate of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reverse-transcription polymerase chain reaction (RT-PCR) test results, and to describe the characteristics of coronavirus disease 2019 (COVID-19) patients with false-negative results.… read more here.
Keywords: pcr tests; test; negative rate; illness ... See more keywords
Real world assessment of SARS-CoV-2 nasopharyngeal swab testing in a high burden COVID-19 region.
Sign Up to like & getrecommendations! Published in 2021 at "Infection control and hospital epidemiology"
DOI: 10.1017/ice.2021.153
Abstract: Concerns persist regarding possible false negative results that may compromise COVID-19 containment. While obtaining a true false negative rate is infeasible, using real world observation these data suggest a possible false negative rate to be… read more here.
Keywords: real world; false negative; assessment sars; world assessment ... See more keywords
‘Test, re-test, re-test’: using inaccurate tests to greatly increase the accuracy of COVID-19 testing
Sign Up to like & getrecommendations! Published in 2020 at "Nature Medicine"
DOI: 10.1038/s41591-020-0891-7
Abstract: To the Editor — Commenting recently on rapid point-of-care tests, US COVID-19 coordinator Deborah Birx said, “We are very quality-oriented. We don’t want false positives.”1 “If they are incredibly accurate, we will work out the… read more here.
Keywords: false negative; time; accuracy; false positive ... See more keywords