Final answer:
In a client with osteomalacia, serum phosphorous levels would be elevated due to increased production of parathyroid hormone.
Step-by-step explanation:
In a client with osteomalacia, you would expect serum phosphorous to be elevated.
Osteomalacia is a condition characterized by a deficiency in vitamin D, which leads to impaired absorption and metabolism of calcium and phosphorus. In response to low levels of vitamin D, the body increases the production of parathyroid hormone (PTH), which stimulates the kidneys to reabsorb more phosphorus from the urine, resulting in elevated serum phosphorus levels.