Practical physiological chemistry : a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . Acid Sodium Urate. chloric acid or acetic acid and their acid solutions yield crystalsof uric acid upon standing. They also respond to the murexidtest. The clinical significance of urate sediments is very simi-lar to that of uric acid. A considerable sediment of amor-phous urates does not necessarily indicate a high uric acidcontent, but ordinarily signifies a concentrated urine havinga very strong acidity. Cystin.—Cystin is one of the rarer of the
Practical physiological chemistry : a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . Acid Sodium Urate. chloric acid or acetic acid and their acid solutions yield crystalsof uric acid upon standing. They also respond to the murexidtest. The clinical significance of urate sediments is very simi-lar to that of uric acid. A considerable sediment of amor-phous urates does not necessarily indicate a high uric acidcontent, but ordinarily signifies a concentrated urine havinga very strong acidity. Cystin.—Cystin is one of the rarer of the crystalline uri-nary sediments. It has been claimed that it occurs moreoften in the urine of men than of women. Cystin crystal-lizes in the form of thin, colorless, hexagonal plates (Fig. 32, PLATE Ammonium Urate, showing Spherules and Thorn vpple-shaped Crystals(From Ogden, alter Peyer.) urine: sediments. 325 p. 76, and Fig. [03, bel<»\v) which arc insoluble in water, alco-hol and acetic acid and soluble in minerals acids, alkalis andespecially in ammonia. Cystin may be identified by burn-ing it upon platinum foil under which condition it does notmelt but vields a bluish-green flame. o I
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