Foam in urine means there is protein in the urine. In normal patients, we have only very few amount of protein in the urine. If we have a 24-hour urinary protein quantitative, we will find the amount of protein in urine less than 150mg. As the protein is very little, it can't be found in normal urine test. Sometimes, when we are in hot environment or after excessive excise, protein will also occur in our body. But it will disappear by itself after some days. You don't need too worry about that.
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