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*  Wassermann test
... and the positive reaction is sometimes called the Bordet-Gengou-Wassermann reaction or Bordet-Wassermann reaction. The ... have been shown to produce far fewer false positive results.[citation needed] Indeed, the "biologic false positives" of modern ... The reaction is not specific to syphilis and will produce a positive reaction to other diseases, including systemic lupus ... It is possible for an infected individual to produce no reaction and for a successfully treated individual to continue to ...
*  Mallein test
This resulted in false-positive reactions. The specificity of Mallein tests and the efficiency and potency of it are connected ... Although Mallein is the most commonly used form of testing for glanders, cross reactions were reported between Burkholderia ...
*  Urine test strip
The reaction is specific for glucose, as occurs in all enzymatic reactions, but it can provide some false positive results due ... False-positive readings are obtained when the reaction does not take place under acidic conditions. Highly pigmented urine and ... False-positive reactions due to menstrual contamination may be seen. They also occur if strong oxidizing detergents are present ... detergents and antiseptics also cause false-positive readings. A false-positive trace reading may occur in specimens with a ...
*  Antibodies from lymphocyte secretions
False-positive reactions with enzyme-linked immunosorbent assay of Mycobacterium tuberculosis antigens in pleural fluid. J Med ... But culture need 6-8week with 10-20% false positive results. A rapid serological test for diagnosis, follow-up of disease ... The ELISA titer indicate the positive or negative result. The diagnosis of TB is most complicated. The routine diagnosis for TB ... anti-TB therapy is not provided if only ALS test is positive. The reason is that this method is potentially an early biomarker ...
*  Anxiety
This may cause false positive reactions but an individual suffering from anxiety may also avoid real threats. This may explain ... In positive psychology, anxiety is described as the mental state that results from a difficult challenge for which the subject ... Anxiety is a worry about future events and fear is a reaction to current events. These feelings may cause physical symptoms, ... and suggested the possibility for positive resolution of anxiety through the self-conscious exercise of responsibility and ...
*  Chemical test in mushroom identification
"The Meixner test in the detection of alpha-amanitin and false-positive reactions caused by psilocin and 5-substituted ... A positive reaction of Schaeffer's test, which uses the reaction of aniline and nitric acid on the surface of the mushroom, is ... Agaricus placomyces and Agaricus xanthodermus produce false negative reactions. Sometimes referred to as "Schaeffer's reaction ... The test yields false positives for some compounds, such as psilocin. Melzer's reagent can be used to test whether spores are ...
*  Nontreponemal tests for syphilis
With nontreponemal tests, false-positive reactions can occur for a large number of reasons, the most common of which is other ... Because of the issues with false positives, confirmation with a second treponemal test that is specific for T. pallidum ... This reaction is the foundation of "nontreponemal" assays such as the VDRL (Venereal Disease Research Laboratory) test and ... Additionally these tests may show false-negative when the patient's antibody titer is very high due to a hook effect (also ...
*  History of syphilis
... was shown to have fewer false positive reactions than the Wassermann test. Both of these early tests have been superseded by ... Although it had some false positive results, it was a major advance in the detection and prevention of syphilis.[citation ... One of the first supporters of mercury treatment was Paracelus because it had positive effects on the Arabic treatment of ...
*  Kastle-Meyer test
... found that the test produced false positive reactions in response to a number of substances besides blood. [See: Marius ... The positive color test alone should not be interpreted as positive proof of blood. A negative result is generally proof of the ... In its reaction with hydrogen peroxide, the heme center of hemoglobin behaves as a peroxidase, reducing the peroxide to water. ... The Kastle-Meyer test has the same reaction with human blood as it does with any other hemoglobin-based blood, so a ...
*  Benedict's reagent
A false positive reaction can be due to the presence of other reducing substances in urine such as ascorbic acid (during intake ... The presence of other reducing substances also gives a positive reaction. Such tests that use this reagent are called the ... A positive test with Benedict's reagent is shown by a color change from clear blue to a brick-red precipitate. Generally, ... Since simple sugars (e.g., glucose) give a positive test, the solution is used to test for the presence of glucose in urine, a ...
*  Streptomycin
Syal K, Srinivasan A, Banerjee D (2013). "Streptomycin interference in Jaffe reaction - Possible false positive creatinine ... Streptomycin is an antibiotic that inhibits both Gram-positive and Gram-negative bacteria, and is therefore a useful broad- ...
*  Jaffe reaction
"Streptomycin interference in Jaffe reaction - possible false positive creatinine estimation in excessive dose exposure". Clin ... The Jaffe reaction is a colorimetric method used in clinical chemistry to determine creatinine levels in blood and urine. In ... The Jaffe reaction, despite its nonspecificity for creatinine, is still widely employed as the method of choice for creatinine ... The Jaffe reaction's nonspecificity remains an important issue. Diabetes patients are a high-risk population to develop chronic ...
*  Mantoux test
... most positive reactions in low-risk individuals are false positives. A false positive result may be caused by nontuberculous ... Vaccination with BCG may result in a false-positive result for many years after vacination. False positives can also occur when ... Another source of false positive results can be allergic reaction or hypersensitivity. Although rare, (about 0.08 reported ... A positive result indicates TB exposure. 5 mm or more is positive in An HIV-positive person Persons with recent contacts with a ...
*  Security printing
False-positive testing derives its name because the testing requires both a false and a positive reaction to authenticate a ... False-positive testing generally is a one time test because once done the results remain visible so while useful as part of a ... False-positive testing can also be done on documents other than currencies as a means to test their authenticity. With the ... The reaction and coloring varies depending upon the formulation. Banknotes, being a specially treated substrate, usually behave ...
*  ARCO
... which had been modified to lower the header's volume and presumably prevent it from triggering false positive alert reactions ... The spot was distributed nationally, and after it had once been identified as the source of the false EAS equipment trips, ... "Arco Oil Radio Ads Include False EAS Header". Radio. September 9, 2010. Archived from the original on August 24, 2014. "ARCO ...
*  Voges-Proskauer test
A reversal in the order of the reagents being added may result in a weak-positive or false-negative reaction. VP is one of the ... The reaction was developed by Daniel Wilhelm Otto Voges and Bernhard Proskauer, German bacteriologists in 1898 at the Institute ... The other three tests include: the indole test [I], the methyl red test [M], and the citrate test [C]. VP positive organisms ... A cherry red color indicates a positive result, while a yellow-brown color indicates a negative result. The test depends on the ...
*  Rapid strep test
... revisiting false-positive results using polymerase chain reaction testing". The Journal of Pediatrics. 162 (6): 1282-4, 1284.e1 ... A positive result is signified by a certain visible reaction. There are three major types of RST: First, a latex fixation test ... Therefore, if the test result is positive, the presence of GAS is highly likely. However, 5% to 20% of individuals carry GAS in ... most authorities recommend antibiotic treatment in the event of a positive RST result from a person with a sore throat. US ...
*  Change blindness
Older drivers expressed reduced accuracy, higher reaction times, and more false positive responses compared to younger drivers ... The reaction time to changes in the driver's peripherals is much slower than the reaction time to changes that occur towards ... Due to the fact that control personnel have delayed reaction because of change blindness, an interface design of computer work ... Stimulation of the superior colliculus improves performance and reaction time in the same way. However, recent research has ...
*  Toxocariasis
A 2007 study announced an ELISA specific to Toxocara canis, which will minimize false positives from cross reactions with ... Physiological reactions to Toxocara infection depend on the host's immune response and the parasitic load. Most cases of ... In this study, the adult patient presented with eosinophilic cellulitis, hepatosplenomegaly, anemia, and a positive ELISA for T ... Steroids have been utilized with some positive results. Anti-helminthic therapy is reserved for severe infections (lungs, brain ...
*  Bisulfite sequencing
... to avoid false positives". Methods. 27 (2): 114-20. doi:10.1016/S1046-2023(02)00062-2. PMID 12095268. Akey DT, Akey JM, Zhang K ... It is important to ensure that reaction parameters such as temperature and salt concentration are suitable to maintain the DNA ... resulting in false positive results for methylation. Only cytosines in single-stranded DNA are susceptible to attack by ... Thus, it is important to assess the amount of DNA degradation resulting from the reaction conditions employed, and consider how ...
*  List of adverse effects for chlorpromazine
Hyperthermia Hypothermia Galactorrhoea Breast enlargement in either sex False-positive pregnancy tests Allergic reaction Fits ... high blood pressure A dangerous skin reaction An autoimmune reaction A potentially fatal collection of symptoms (i.e. syndrome ... erection Fear of light A reduction in the normal homeostatic breathing reaction to reductions in plasmacarbon dioxide levels ... Impaired thermoregulation Hyperglycaemia Other hypothalamic abnormalities Blurred vision Confusion Raised ANA titre Positive ...
*  3,3'-Diaminobenzidine
Improperly prepared tissue samples may give false positives In research, this reaction is used to stain cells that were ...
*  Webtag
Borst, A.; A. T. A. Box; A. C. Fluit (2004-03-09). "False-Positive Results and Contamination in Nucleic Acid Amplification ... These tags can be appended to gene specific primers for reverse transcriptase polymerase chain reaction (RT-PCR) experiments, ... Martel, Fatima; Dirk Grundemann; Edgar Schöig (2002-03-31). "A simple method for elimination of false positive results in RT- ... Since PCR is unable to distinguish between cDNA targets and genomic DNA contamination, false positives and/or erroneous ...
*  Allergic reactions to anaesthesia
However, skin testing can be misleading in giving false positive and false negative results. Although complications during ... Serious allergic reactions to anesthetic medications are rare and a usually attributable to factors other than the anesthetic. ... The severity of the reaction whilst under anaesthesia is due to the fact that the anaesthetist is only made aware of the ... Anaesthetists are trained to recognise if an allergic reaction is occurring. The identification of a complication is made by ...
*  Reverse transcription polymerase chain reaction
A simple method for elimination of false positive results is to include anchors, or tags, to the 5' region of a gene specific ... Martel, Fatima; Dirk Grundemann; Edgar Schöig (2002-03-31). "A simple method for elimination of false positive results in RT- ... On the other hand, the two-step reaction requires that the reverse transcriptase reaction and PCR amplification be performed in ... Reverse transcription polymerase chain reaction (RT-PCR), a variant of polymerase chain reaction (PCR), is a technique commonly ...
*  Pirates of the Caribbean: Dead Men Tell No Tales
Both teasers received a highly positive reaction from audiences. The official trailer was released on March 2, 2017. Another ... its delight in its own inventions so forced and false, that it becomes almost the perfect opposite of entertainment." Michael ... Ashley Esqueda of CNET gave the film a positive review, arguing it brought the franchise back to what made its first two ...
*  ICD-10 Chapter XVIII: Symptoms, signs and abnormal clinical and laboratory findings
Abnormal reaction to tuberculin test (R76.2) False-positive serological test for syphilis (R76.8) Other specified abnormal ...