Deposit
As soon it is passed, normal urine is clear, transparent and free from any deposit. But after some time, there may be a slight deposit of mucous, floating like a cloud in urine. If traces of blood are present, the cloud in the urine. If traces of blood are present, the cloud may be of a bluish tinge; and the phosphate urates and free uric may also separate out from normal urine.
The deposit of phosphate appears in alkaline urine and if a little dilute acetic acid is added, it dissolves. A deposit of pus is not dissolved by acetic acid. The deposit of urates appears in concentrated normal urine. But the urates generally disappear when the urine is slowly heated. Acetic acid does not dissolve the urates. But nitric acid dissolves them with production of effervescence. The uric acid deposit may appear in acid urine in the form of crystalline granules of a darkish brown colour known as cayenne pepper deposit.
These deposits do not mean that these substances are in excess of the normal in the sample of urine. But they only show that they are deposited owing to the altered alkaline (kapha) or acid (pitta) condition of the urine. It does not mean, for instance, that more phosphate is eliminated.
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