Protein nor sugar should not be found in the urine of a healthy person.
In a healthy person's urine, you would typically find water, urea, creatinine, uric acid, electrolytes (such as sodium, potassium, and chloride), various pigments, and small amounts of proteins. The presence of certain substances or abnormal levels may indicate underlying health issues.
Urea, creatinine, uric acid, and water are the main substances found in urine under healthy conditions. Other components may include electrolytes, hormones, and other waste products.
Urine from a healthy person is primarily composed of water (about 95%), urea, and electrolytes, such as sodium and potassium. Other components may include creatinine, uric acid, and small amounts of other waste products.
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
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.
If protein, glucose or white blood cellsappear in urine, it's a red flag.
The two main substances found in urine are water and waste products, such as urea, creatinine, and uric acid.
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