Results 1 to 10 of about 138,185 (200)

A Fatal Case of Herpes Simplex Encephalitis with Two False-Negative Polymerase Chain Reactions [PDF]

Case Reports in Neurology, 2018
An 88-year-old man presented with a 1-month history of altered mental status and seizures. His electrographic and imaging findings were suggestive of herpes simplex encephalitis (HSE), for which he was empirically treated with acyclovir. He underwent two
Aldo A. Mendez, Annaliese Bosco, Lama Abdel-Wahed, Kendra Palmer, Karra A. Jones, Annie Killoran   +5 more
doaj   +4 more sources

False-negative reactions to the comparative intradermal tuberculin test for bovine tuberculosis [PDF]

Pesquisa Veterinária Brasileira, 2017
: According to the Brazilian National Program for the Control and Eradication of Animal Brucellosis and Tuberculosis (PNCEBT), the routine tests for the diagnosis of bovine tuberculosis in the country are the simple intradermal tuberculin test (SITT) of ...
Rudielle A. Rodrigues, Ingrid I.F.S. Meneses, Klaudia S.G. Jorge, Márcio R. Silva, Lenita R. Santos, Walter Lilenbaum, Rodrigo N. Etges, Flábio R. Araújo   +7 more
doaj   +4 more sources

False negative result of polymerase chain reaction in very early stages of acute retinal necrosis [PDF]

Journal of Ophthalmic Inflammation and Infection, 2023
Abstract Background Viral nucleic acid testing of intraocular fluid using polymerase chain reaction (PCR) is a major laboratory examination in the diagnosis of acute retinal necrosis (ARN). Importantly, false negative PCR results may occur in several special situations.
Haibo Wang, Zhuyun Qian, Lin Cui, Beichen Liu, Jixin Zou, Lu Wang, Yong Tao, Lijun Zhang, Lei Jin   +8 more
openaire   +4 more sources

False negative polymerase chain reaction on cerebrospinal fluid samples in tuberculous meningitis [PDF]

Journal of Neurology, Neurosurgery & Psychiatry, 1999
There have been few studies in the literature concerned solely with the use of the polymerase chain reaction (PCR) to identify Mycobacterium tuberculosis DNA directly from CSF.1-4 These studies suggest that in some cases, PCR may be more sensitive than culture; however, in the largest study, performed …
D M, Gascoyne-Binzi, P M, Hawkey
openaire   +4 more sources

False negative diagnostic errors with polymerase chain reaction for the detection of cryptococcal meningoencephalitis [PDF]

Medical Mycology, 2019
Abstract The accuracy of the BioFire FilmArray Meningitis/Encephalitis (ME) panel for the identification of Cryptococcus has recently been called into question. The primary objective of this study was to assess the agreement between the BioFire ME polymerase chain reaction (PCR) and other markers of cryptococcal infection.
Matthew A Krolikowski, Whitney D Krolikowski, Paras D Patel, Cameron G Lanier, Paul O Lewis   +4 more
openaire   +4 more sources

False-Positive Clostridium difficile in Negative-Control Reactions Peak and Then Decrease with Repetitive Refrigeration of Immunoassay [PDF]

International Scholarly Research Notices, 2014
Aberrant false-positive reactions in negative-controls during ELISA testing for Clostridium difficile indicated the potential for false-diagnoses. Experiments with 96-well products showed a maximum peak of false-positive immunoassay reactions with the provided negative-control reagents after 5 refrigeration-to-room temperature cycles (P<0.001 ...
Alexander Rodriguez-Palacios, Henry R. Stämpfli, Yung-Fu Chang   +2 more
openaire   +4 more sources

S-gene Dropout and False-negative Reverse Transcriptase-polymerase Chain Reaction Tests

Annals of Maxillofacial Surgery, 2021
SM Balaji
openaire   +4 more sources

Polyethylene glycol modified LAMP assay enables sensitive and specific clinical detection of varicella-zoster virus [PDF]

Frontiers in Cellular and Infection Microbiology
Accurate, timely diagnosis of varicella–zoster virus (VZV) is important for treatment and infection control. While loop-mediated isothermal amplification (LAMP) is operationally simple, nonspecific priming can degrade performance.
Lei Zhang, Lei Zhang, Jun Tian, Wenjie Fang, Bin Xu, Bin Xu, Weinan Guo, Saiping Lv, Li Yang   +8 more
doaj   +2 more sources

False negative polymerase chain reaction on cerebrospinal fluid samples in tuberculous meningitis established by culture [PDF]

Journal of Neurology, Neurosurgery & Psychiatry, 1999
The polymerase chain reaction (PCR) has been reported to be of diagnostic value when performed on CSF samples in tuberculous meningitis.1-4 Rapid amplification of Mycobacteruim tuberculosis specific DNA enables results to be available within 48 hours and can influence treatment decisions.
M MELZER, T J BROWN, J FLOOD, S LACEY, L R BAGG   +4 more
openaire   +2 more sources

A Patient with COVID-19 Presenting a False-Negative Reverse Transcriptase Polymerase Chain Reaction Result [PDF]

Korean Journal of Radiology, 2020
Zuhua Chen, Yunjiang Li, Baoliang Wu, Yanchun Hou, Jianfeng Bao, Xueying Deng   +5 more
openaire   +4 more sources