• antibodies
  • Examples include high levels of syphilis antibodies in HIV patients or high levels of cryptococcal antigen leading to false negative tests in undiluted samples. (wikipedia.org)
  • Demonstration of antibodies against the agent either with the classic Huddleson, Wright, and/or Bengal Rose reactions, either with ELISA or the 2-mercaptoethanol assay for IgM antibodies associated with chronic disease Histologic evidence of granulomatous hepatitis on hepatic biopsy Radiologic alterations in infected vertebrae: the Pedro Pons sign (preferential erosion of the anterosuperior corner of lumbar vertebrae) and marked osteophytosis are suspicious of brucellic spondylitis. (wikipedia.org)
  • antigen
  • In a Type III delayed hypersensitivity reaction, IgG forms an immune complex with the allergen/antigen (Ag), which activates the complement pathway and releases inflammatory mediators wherever the immune complex is deposited. (askdrthomas.com)
  • yields
  • The test involves placing a faecal sample on guaiac paper (containing a phenolic compound, alpha-guaiaconic acid, extracted from the wood resin of Guaiacum trees) and applying hydrogen peroxide which, in the presence of blood, yields a blue reaction product within seconds. (wikipedia.org)
  • latent
  • A positive reaction may be observed in both latent and active TB infection ,therefore,it is unreliable in differentiating whether the person is currently having TB or had been infected in past or at carrier stage. (microbeonline.com)
  • patients
  • In 7 of the 28 pN+ patients (25%), metastases were also detected in non-SLN, thus giving a false-negative rate (FNR of 38.9% (7/18), a negative predictive value (NPV) of 61.1% (11/18), and an accuracy of 82.1% (32/39). (biomedsearch.com)
  • None of these six research groups to report negative findings - which in the case of the UK included Professor John Gow, Dr Jonathan Kerr and Dr Jonathan Stoye and used patient samples from physicians including Dr Abhijit Chaudhuri and Professor Peter Behan - have been able to find XMRV in blood samples from ME/CFS patients, or in the healthy controls. (meassociation.org.uk)
  • In plasma, elevation of hydroxy-C18:1 acylcarnitine over the 95th centile of controls, in combination with an elevation of two of the three acylcarnitines C14, C14:1 and hydroxy-C16, identified over 85% of patients with high specificity (less than 0.1% false positive rate). (umassmed.edu)
  • However, their usefulness is limited by decreased sensitivity in early primary syphilis and during late syphilis, when a large number of untreated patients will be negative by these methods. (wikipedia.org)
  • species
  • A 3-10% solution of potassium hydroxide (KOH) gives a color change in some species of mushrooms: In Agaricus, some species such as A. xanthodermus turn yellow with KOH, many have no reaction, and A. subrutilescens turns green. (wikipedia.org)
  • tests
  • Blood tests characteristically reveal a low number of white blood cells and red blood cells, show some elevation of liver enzymes such as aspartate aminotransferase (AST) and alanine aminotransferase (ALT), and demonstrate positive Bengal Rose and Huddleston reactions. (wikipedia.org)
  • allergy
  • For example, whey protein is altered by high heat, so someone with a whey allergy may have no reaction to heat-altered milk products. (askdrthomas.com)
  • The severity of the reaction whilst under anaesthesia is due to the fact that the anaesthetist is only made aware of the allergy when it is severe enough to compromise the cardiovascular system and the respiratory system. (wikipedia.org)
  • expectations
  • I felt that referencing them in Daria, while we were trying to establish the new characters and the different type of humor, ran the risk of setting up false expectations and disappointment in the viewers - which could lead to a negative reaction to the new show and its different tone. (wikipedia.org)
  • rate
  • Our hypothesis is that the intervention group will have less variability as measured by mean deviation between exams and greater reliability as measured by the standard unreliability indexes of false positive rate, false negative rate, and fixation losses. (clinicaltrials.gov)
  • often
  • Paper strips are often specific to a single reaction (e.g. pH measurement), while the strips with pads allow several determinations simultaneously. (wikipedia.org)
  • initial
  • Thrombosis and subsequent recanalization of a ruptured intracranial aneurysm in 2 children, demonstrating the value of repeating catheter angiography after an initial negative study. (biomedsearch.com)
  • The cases of 2 children with true aneurysmal subarachnoid hemorrhages (SAHs) and initial false-negative angiograms are reported. (biomedsearch.com)
  • turn
  • The number of customers at the bank increases, as does their annoyance and excitement, which in turn fuels the false rumours of the bank's insolvency and upcoming bankruptcy, causing more customers to come and try to withdraw their money. (wikipedia.org)
  • immediate
  • IgE production occurs right after ingestion or inhalation of an allergen and is referred to as a Type I immediate hypersensitivity reaction. (askdrthomas.com)