Aloin Test
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
The Aloin test (Rossel) is a method for detecting blood in gastric juice, feces, urine, and other secretions. The test involves adding ether, acetic acid, and an alcoholic aloin solution to the sample, with a pink or cherry-red color indicating the presence of blood.
Encyclopedia entry (1928–1936)
Aloin Test (Rossel), serves for the detection of blood in gastric juice, feces, urine, and other secretions. To several cubic centimeters of the substance being tested, add about 20 cubic centimeters of ether to dissolve fats; after removing the ether, add 1/3 volume of glacial acetic acid, shake, add 40 cubic centimeters of ether; the ether extract is decanted and 20 drops of old turpentine and 15 drops of an alcoholic solution of aloin (a tip of a knife in 3-5 cubic centimeters of 70% alcohol) are added to it. In the presence of blood, a pink or cherry-red coloring occurs. The sensitivity of the test is not great.
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“Aloin Test.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/aloin-test/