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Protein nor sugar should not be found in the urine of a healthy person.
Plasma proteins and red blood cells are not excreted in urine because they remain in the blood when it is filtered through the kidneys and into the ureters. They are too big to be filtered. Most other substances present in blood are also present in urine since the kidneys filter out poisonous substances as well as substances that are present in excess such as salt and water.
If you are talking about three substances that are normally found in blood but not in urine, they are leukocytes, erythrocytes and glucose.
Ions and nutrients
If protein, glucose or white blood cellsappear in urine, it's a red flag.
Healthy urine consists of water, ammonia, potassium, hydrogen, little sodium, little creatine, little uric acid and urea and little bilirubin, if any of these substance is present in too much (or to little) quanity then it becomes unhealthy. Also if glucose and/or RBC are found in urine it is unhealthy.
The amount of protein in your urine that is healthy varies from person to person. Some healthy people spill protein in their urine regularly. Talk with your health care provider for advice specific to your situation.
Ions and nutrients
ions and nutrients
In a healthy person, water, urea, and a small amount of electrolytes like sodium and potassium should be found. What should NOT be found are red or white blood cells, bacteria (yes, urine should be sterile), or nitrites or esterases which indicate an infectious processes.
you are not suppose to have any. see a doctor ASAP! when a person urinates and there are white substances inside of the urine what are they?
Controls are used as a healthy sample to compare another person's urine test to. Knowing what is healthy helps doctors to see what is unhealthy.