CHAPTER XXII 



URINE: PHYSIOLOGICAL CONSTITUENTS 1 

 i. Organic Physiological Constituents 



Urea. 

 Uric acid. 

 Creatinine. 

 Creatine. 2 



Ethereal sulphuric acids. 



Hippuric acid. 

 Oxalic acid. 



Indoxyl-sulphuric acid. 

 J Phenol- and ^-cresol-sulphuric acids. 

 I Pyrocatechol-sulphuric acid. 

 I Skatoxyl-sulphuric acid. 



Neutral sulphur compounds. 



Allantoin. 



Aromatic oxyacids 



Cystine. 



Chondroitin-sulphuric acid. 

 Thiocyanates. 

 \ Taurine derivatives. 

 Oxyproteic acid. 

 Alloxyproteic acid. 

 Uroferric acid. 



Para-oxyphenyl-acetic acid. 

 Para-oxyphenyl-propionic acid. 

 Homogentisic acid. 



Uroleucic acid. 



i 



| Oxymandelic acid. 



I Kynurenic acid. 

 Amino-acids. 

 Peptides. 

 Benzoic acid. 

 Nucleoprotein. 

 Oxaluric acid. 

 Glucose. 



1 It is impossible to make any absolute classification of the physiological and pathological 

 constituents of the urine. A substance may be present in the urine in small amount physio- 

 logically and be sufficiently increased under certain conditions as to be termed a patholog- 

 ical constituent. Therefore it depends, in some instances upon the quantity ^ of a constituent 

 present whether it may be correctly termed a physiological or a pathological constituent. 



2 Normal constituent of urine of adults but found in larger amount in urine of infants 

 and children (see p. 509). 



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