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Bial's reagent consists of 0.4 g orcinol, 200 ml of concentrated hydrochloric acid and 0.5 ml of a 10% solution of ferric chloride. [2] Bial's test is used to distinguish pentoses from hexoses; this distinction is based on the color that develops in the presence of orcinol and iron (III) chloride. Furfural from pentoses gives a blue or green color.
Orcinol is an organic compound with the formula CH 3 C 6 H 3 (OH) 2. It occurs in many species of lichens [3] including Roccella tinctoria and Lecanora. Orcinol has been detected in the "toxic glue" of the ant species Camponotus saundersi. It is a colorless solid. It is related to resorcinol, 1,3-C 6 H 4 (OH) 2.
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
Manfred Bial (10 December 1869 – 26 May 1908) was a German physician who invented a test for pentoses using orcinol, now known as Bial's test. [1] Bial was born on 10 December 1869 in Breslau, the son of Max Bial. He was an assistant at the Kaiserin-Augusta-Hospital in Berlin. Bial died on 26 May 1908 in Monaco. [citation needed]
Bial's test; References This page was last edited on 17 July 2024, at 09:05 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ...
A randomized controlled trial compared how well physicians interpreted diagnostic tests that were presented as either sensitivity and specificity, a likelihood ratio, or an inexact graphic of the likelihood ratio, found no difference between the three modes in interpretation of test results. [10]
According to the American Cancer Society, these rates have risen by 2% annually since 2011. “Early onset colorectal cancer (colon cancer in persons under age 50) is on the rise, but in absolute ...
D-xylose absorption test is a medical test performed to diagnose conditions that present with malabsorption of the proximal small intestine [1] due to defects in the integrity of the gastrointestinal mucosa. [2] D-xylose is a monosaccharide, or simple sugar, that does not require enzymes for digestion prior to absorption. Its absorption ...