Which of the these should not be found in  the urine of a normal person?

The urine of a normal person should not contain the following:

1. Glucose: This is a type of sugar that your body uses for energy. Normally, the kidneys reabsorb glucose as it passes through them, so it doesn't end up in urine. If you have glucose in your urine, it could be a sign of diabetes.

2. Protein: Your kidneys should also filter out protein. If you have protein in your urine, it could be a sign of kidney disease.

3. Red and white blood cells: These cells are too large to pass through the kidneys into the urine. If they are found in your urine, it could be a sign of infection, kidney disease, or other serious conditions.

4. Ketones: These are produced when your body burns fat for energy. If you have ketones in your urine, it could be a sign of diabetes.

5. Bacteria, viruses, and fungi: These can cause urinary tract infections. If they are found in your urine, it could be a sign of an infection.

6. Crystals: These can form kidney stones. If they are found in your urine, it could be a sign of kidney stones.