Sunday, August 7, 2022

Lactosuria

When sugar is found in the urine:, it is quite true that it is nearly always glucose; hence the term glucosuria would be quite correct in most instances. However, certain other sugars may be present e.g., certain disaccharides, lactose, galactose, fructose, and pentose.

Lactosuria is an abnormal amount of lactose in the urine. It is a common finding during pregnancy and lactation, and in the newborn, especially premature babies.

Lactose is usually absent from the urine of normal women but there may be traces, alimentary in origin. The urine of most pregnant women contains lactose in very varying amount, but the presence of lactose is not inevitable even in the later months of pregnancy.

Lactose is the commonest sugar found in the urine. Lactose, as is well known, reduces Fehling's solution, and not infrequently lactosuria has been mistaken for true glycosuria.
Lactosuria

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