Protein nor sugar should not be found in the urine of a healthy person.
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.
urea
The most logical answer would be urine, and it is!
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.
The two main substances found in urine are water and waste products, such as urea, creatinine, and uric acid.
In the urine of a healthy person, the primary substances include water, urea, creatinine, uric acid, and various electrolytes such as sodium, potassium, and chloride. Additionally, urine may contain small amounts of other metabolites and waste products, including hormones and vitamins. The composition can vary based on diet, hydration levels, and overall health. However, healthy urine should generally be free from glucose, significant protein, and blood.
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.
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.
urea
acetone
The amount of substance that exceeds the tubular maximum will be found in the urine.