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. 

 Phenol- and ^-cresol-sulphuric acids. 

 Pyrocatechol-sulphuric acid. 

 Skatoxyl-sulphuric acid. 



Neutral sulphur compounds, 



Allan toin. 



Aromatic oxyacids, 



Cystine. 



Chondroi tin-sulphuric acid. 



Thiocyanates. 



Taurine derivatives. 



Oxyproteic acid. 



Alloxyproteic acid. 



Uroferric acid. 



Para-oxyphenyl-acetic acid. 



Para-oxyphenyl-propionic acid. 



Homogentisic acid. 



Uroleucic acid. 



Oxymandelic acid. 



Kynurenic acid. 

 Amino-acids. 

 Peptides. 

 Benzoic acid. 

 Nucleoprotein. 

 Oxaluric acid. 

 Glucose. 



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

 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. 529). 



386 



