Assistant Laboratory Animal Technician (ALAT) Practice Exam

Why must water-soluble vitamins be supplied to an animal on a daily basis?

1. They are not easily stored by the body

2. They can cause toxicity if consumed in excess

3. They are primarily absorbed in the intestines

4. They are essential for bone health

The correct answer is: They are not easily stored by the body

Water-soluble vitamins, such as the B-complex vitamins and vitamin C, are not stored in significant amounts within the body. This characteristic means that any excess of these vitamins is typically excreted in urine rather than being stored for later use. Consequently, animals must receive these vitamins daily through their diet to maintain proper physiological functions and prevent deficiencies. Regular daily intake ensures that the levels of these essential vitamins are sufficient to support various metabolic processes, including energy production, red blood cell formation, and neurological function. The need for consistent replenishment highlights the importance of including adequate sources of water-soluble vitamins in an animal's diet.