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Heavy whitish foam in urine.
The amount of protein being lost in the urine can be quantified by collecting the urine for 24 hours, measuring a sample of the pooled urine, and extrapolating to the volume collected.
Also a urine dipstick test for proteinuria can give a rough estimate of albuminuria. This is because Albumin is by far the dominant plasma protein, and bromphenol blue the agent used in the dipstick is specific to albumin.
The kidneys normally do not filter large molecules into the urine, so albuminuria can be an indicator of damage to the kidneys or excessive salt intake. It can also occur in patients with long-standing diabetes, especially type 1 diabetes.
Causes of albuminuria can be discriminated between by the amount of protein excreted.
|Wikisource has the text of the 1911 Encyclopædia Britannica article Albuminuria.|