Essentials of practice of medicine : arranged in the form of questions and answers, prepared especially for students of medicine . apors the bright purple color of niurexide will appear if uricacid was present. How is the amount of uric acid in urine determined ? By acidulating 200 urine with 10 HO and setting it asidefor 48 hours. The crystals which haVe separated arc now collectedona weighed filter and well washed with cold water; the filter isthen dried until it ceases to lose weight, and for each 100 fluidemployed gramme uric acid is to be added to the increase of NOR
Essentials of practice of medicine : arranged in the form of questions and answers, prepared especially for students of medicine . apors the bright purple color of niurexide will appear if uricacid was present. How is the amount of uric acid in urine determined ? By acidulating 200 urine with 10 HO and setting it asidefor 48 hours. The crystals which haVe separated arc now collectedona weighed filter and well washed with cold water; the filter isthen dried until it ceases to lose weight, and for each 100 fluidemployed gramme uric acid is to be added to the increase of NORMAL ORGANIC CONSTITUENTS OF URINE. 31 weight over that of the empty filter, which gives approximately theamount of uric acid present. What is hippuric acid ? A normal monobasic acid of the urine, of the formula C9H9N( >3,which may he regarded a benzoyl glycocin, as it splits up hito ben-zoic acid and glycocin. In what amounts is it present in the urine and under whatconditions may this be increased ? About to grammes are excreted during 24 hours in theurine, which is increased by vegetable and diminished by animal. Hippuric acid. diet Benzoic, cinnamic and quinic acids are converted in the b >dyinto hippuric acid and excreted as such. It is said to be increasedin diabetes mellitus, also in hepatic affections and in the physical properties and microscopic appearance ofhippuric acid. .It is readily soluble in alcohol, less so in ether, and dissolves onlyin 600 parts of water; it crystallizes in colorless, long four-sidedrhombic prisms, which frequently form stellate bundles (Fig. ()• What is kreatinin ? w i r \ p A constant component of the urine, of the turunda ( 4UTJN,Ut 32 EXAMINATION OF URINE. supposed to be derived from the kreutin of the muscles. About 1gramme is daily excreted under normal conditions and mixed diet. State its properties. It is a basic body which, when pure, forms colorless, prismaticcrystals, soluble in I I parts of water, an
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