Normal Amounts of Substances Excreted by the Kidney

Deviations from the Normal Amounts of Substances Excreted by the Kidney 

Data on this subject are not numerous. Urine analyses have been carried out especially in pregnant women, but only rarely in atherosclerotic patients. Moreover, as a consequence of the secondary kidney lesion in toxemia of pregnancy, of which the proteinuria is the most outstanding feature, changes in the excretion pattern of other substances are possible. 

It must be kept in mind also that in pregnancy, a number of shifts in the blood lipid pattern in the favorable direction may occur initially, whereas as toxemia develops, a shift in the reverse direction starts. In this way, the disease can be present for some time before the ori al levels are passed, and the values shift into the bad direction.  

Moreover, uniformity of chemical methods is a first requirement in this respect, and a uniform nomenclature of the lipid and protein fractions is of the utmost importance. 

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