What substances are not removed from the blood by urine?

The excretory system is an amazing system of our body that makes it possible to cleanse our body of toxins and substances, such as excess salts, excess water and urea, the presence of which in our body, blood is undesirable.
Certain threshold substances, such as glucose, are not excreted from the blood in the urine if their amount in the body does not exceed the norm, and proteins are not excreted from the blood in the urine.



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