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The Kastle–Meyer test is a presumptive blood test, first described in 1903, in which the chemical indicator phenolphthalein is used to detect the possible presence of hemoglobin. It relies on the peroxidase -like activity of hemoglobin in blood to catalyze the oxidation of phenolphthalin (the colorless reduced form of phenolphthalein) into ...
Most people who take a drug test take a presumptive test, cheaper and faster than other methods of testing. However, it is less accurate and can render false results. The FDA recommends for confirmatory testing to be conducted and the placing of a warning label on the presumptive drug test: "This assay provides only a preliminary result.
Another common presumptive test is the Kastle-Meyer or Phenolphthalein test. This is a catalytic test that detects the heme group in blood that transports oxygen and carbon dioxide. [ 5 ] A sterile cotton swab is soaked in distilled water and applied to the area of suspected blood to pick up some of the sample. [ 5 ]
Clinistrips quantitatively test for sugar in urine; The Kastle-Meyer test tests for the presence of hemoglobin; Salicylate testing is a category of drug testing that is focused on detecting salicylates such as acetylsalicylic acid for either biochemical or medical purposes. The Phadebas test tests for the presence of saliva for forensic purposes
The Kastle Meyer (KM) reagent is actually already basic in pH -- it is when the reduced phenolphthalein in the reagent is oxidized to phenolphthalein by the presence of heme (or some other oxidizer) that it is the phenolphthalein you are familiar with, which indeed, will turn pink in the presence of its alkaline solvent.
Psychosociology or psycho-sociology is the study of problems common to psychology and sociology, particularly the way individual behavior is influenced by the groups the person belongs to. [ 1 ] For example, in the study of criminals , psychology studies the personality of the criminal shaped by the criminal's upbringing.
On this background, ongoing work in the sociology of scientific knowledge (SSK) and the history and philosophy of science (HPS) was able to assert its epistemological consequences, leading most notably to the establishment of the strong programme at the University of Edinburgh. In terms of the two strands of social epistemology, Fuller is more ...
Smelser porter considered social movements to be the side-effects of rapid social change. [2] He argued that six things were necessary and sufficient for collective behavior to emerge, [1] and that social movements must evolve through the following relevant stages: [2] [3]