Urine may routinely contain sodium, potassium, proteins, and red blood cells. True False

Answer: True

Urine is a liquid by-product of the body's metabolism, primarily composed of water, urea, and various electrolytes. It is common for urine to contain sodium and potassium, as these are key electrolytes regulated by the kidneys. Proteins are not typically present in significant amounts in healthy urine; however, small traces may appear under certain conditions or in specific medical situations. The presence of red blood cells in urine, known as hematuria, is not normal and typically indicates underlying health issues.

In summary, while sodium and potassium are routinely found in urine, proteins and red blood cells are not typically present in healthy urine. Thus, the statement can be considered partially true, but with important caveats regarding the context of proteins and red blood cells.