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Reaction
(redirected from false positive reaction)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia 0.01 sec.
Reaction
A decline in prices following an advance. Opposite of rally.

Reaction
A decrease in price following an increase in price. A reaction connotes a slow decline; it is the opposite of a recovery.

reaction
A decline in security prices following a period of rising security prices.


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Sometimes, a false positive reaction is observed from a skin prick test.
Control latex, also dried onto the reaction slide, rules out false positive reactions due to non-specific reactions, whilst positive and negative controls (inactivated strains dried onto disposable mixing strips) ensure the correct working of the test.
A 1998 conference on laboratory diagnosis of Lyme disease convened by the National Institute of Allergy and Infectious Diseases (NIAID), Centers for Disease Control (CDC), and Office of Rare Diseases (ORD) recommended that "only bacterial antigens derived from OspA-deficient mutant of Borrelia burgdorferi be used in all diagnostic assays to circumvent false positive reactions likely to result from the use of OspA Lyme vaccines.
 
 
 
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