568 



PHYSIOLOGICAL CHEMISTRY 



sucrose ingested. Sugar analyses should be made at 7 A. M. and 12 M. each day. 

 INFLUENCE OF EXERCISE ON BLOOD SUGAR (Diabetes Patient) 



Calculate your results, tabulate them and compare them with those given above. 



5. Alimentary Glycosuria. Normal urine contains a trace of glucose but not 

 enough to permit detection by the ordinary tests used in urinary analysis. If 

 more glucose is ingested than can be absorbed and assimilated by the body the 

 excess will be eliminated in the urine. The "assimilation limit" for the glucose 

 has been exceeded, and a transient alimentary glycosuria results. To demon- 

 strate this, glycosuria proceed as follows : Before breakfast or luncheon empty 

 the bladder and test the urine for sugar by any reliable test (see Chapter XXIII). 

 If the test is negative, ingest along with the other articles of diet, 250 grams of 

 glucose, sucrose, or lactose dissolved in water. Empty the bladder at the end 

 of every hour for a period of three hours and test the urine for reducing sugar 

 and the sugar ingested. 



Was there any glycosuria and if so how soon after the sugar ingestion did it 

 appear? If no glycosuria resulted repeat the test on a subsequent day using 

 a larger quantity of sugar. If desired, the sugar in the urine may be 

 determined quantitatively by one of the methods given in Chapter XXVI. 



This experiment may be made more complete by making determinations of 

 blood sugar at short intervals as described in Experiment 3, page 566. If 

 desired, data on glycosuria, hyperglycemia and carbohydrate in feces (page 591) 

 may be collected from one experiment. 



6. Absorption of Carbohydrate as Influenced by Fat Ingestion. When fat is 

 eaten along with carbohydrate food the absorption of the latter is somewhat 

 delayed. This has been shown experimentally. 1 To demonstrate the point pro- 

 ceed as follows: Determine the content of sugar in the blood at various intervals 



1 Jacobson: Bioch. Zeit., 56, 471, 1913. 



