Results 231 to 240 of about 144,715 (261)

False negative DNA polymerase chain reaction in an infant with subtype C human immunodeficiency virus type 1 infection

The Pediatric Infectious Disease Journal, 2002
Diagnosis of HIV infection in early infancy generally relies on detection of HIV proviral DNA by PCR. However, many of the HIV DNA PCR assays currently in use are either not optimized or have not been validated for diagnosis of infection with non-subtype B HIV.
Nancy E, Kline, Heidi, Schwarzwald, Mark W, Kline   +2 more
openaire   +2 more sources

[Interpretation and relevance of patch testing: false-positive and false-negative test reactions, compound allergy, cross-sensitivity].

Annales de dermatologie et de venereologie, 2009
This chapter reviews pitfalls and mistakes in patch testing. Most sources of false-positive and false-negative reactions are indicated and analysed. Cross-sensitivity among allergens is discussed and compound allergy is debated. Keys for establishing relevance are indicated, for a better reading and interpretation of patch testing by practitioners ...
C J, Le Coz, D, Sasseville
openaire   +1 more source

[The Schilling test in Biermer's disease, problems of false negative reactions. Apropos of a case].

Annales de medecine interne, 1988
A case of pernicious anemia in a 30 years old men is described. This disease was typical for the hematologic, immunologic and medullary patterns, for his evolution, but the Schilling test, a dual tracer method, did not confirm the diagnosis. The contradictory of this result can be explained wether by the bias of the test itself, or by the intestinal ...
A, Devidas, V, Jeantils, A, Soulier, F, Lejeune, G, Delzant   +4 more
openaire   +1 more source

Polymerase chain reaction for the detection of HCV-RNA: cryoglobulinaemia as a cause for false negative results.

Italian journal of gastroenterology and hepatology, 1998
Polymerase chain reaction is widely used in clinical practice as a reliable assay for the detection and quantitation of hepatitis C virus RNA in serum and tissue. Due to the high sensitivity of the test, both false positive and false negative results can occur.
A, Colantoni, N, De Maria, R, Idilman, D H, Van Thiel   +3 more
openaire   +1 more source

False-positive and false-negative COVID-19 cases: respiratory prevention and management strategies, vaccination, and further perspectives

Expert Review of Respiratory Medicine, 2021
Dimitra S Mouliou, Konstantinos I Gourgoulianis   +1 more
exaly  

FALSE NEGATIVE PATCH TEST REACTION CAUSED BY TESTING WITH DENTAL COMPOSITE ACRYLIC RESIN

International Journal of Dermatology, 1996
L, Kanerva, T, Estlander, R, Jolanki
openaire   +2 more sources

Understanding the cause of false negative β-d-glucuronidase reactions in culture media containing fermentable carbohydrate

Letters in Applied Microbiology, 2010
C R Fricker
exaly  

Suboptimal Biological Sampling as a Probable Cause of False-Negative COVID-19 Diagnostic Test Results

Journal of Infectious Diseases, 2020
Natalie N Kinloch, Chanson J Brumme, Tanya Lawson   +2 more
exaly  

Preventing intense false positive and negative reactions attributed to the principle of ELISA to re-investigate antibody studies in autoimmune diseases

Journal of Immunological Methods, 2014
Kuniaki Terato, Christopher T, Takaki Waritani   +2 more
exaly  

Low human immunodeficiency virus titer and polymerase chain reaction false-negatives

Journal of Infectious Diseases, 1992
ZAZZI, MAURIZIO, ROMANO, LAURA, BRASINI A., VALENSIN, PIER EGISTO   +3 more
openaire   +3 more sources