Final answer:
Glucose is not typically found in urine under normal circumstances; its presence may indicate a health issue such as diabetes. Urea, creatinine, and sodium are standard components of urine.
Step-by-step explanation:
Under normal circumstances, glucose is not typically found in the urine because it is reabsorbed by the kidneys. The kidneys filter the blood plasma and reabsorb substances that the body needs, while waste products are excreted in the urine. Urea, creatinine, and sodium are normal constituents of urine; they are waste products of metabolism and excess ions that the body disposes of through urination. Urine’s composition and function indicate the status of body health, with normal constituents including water, urea, salts, and pigment. The specific gravity of urine can also provide information on a person's hydration status or the presence of certain disorders. The presence of abnormal substances in the urine, such as glucose, may be indicative of medical conditions such as diabetes mellitus.