A 3-year-old short and thin boy has severe right-sided leg pain. He is a known case of cystic fibrosis. There is mild swelling of the right lower leg and a small, soft anterior fontanelle. Palpation of the skull shows flexibility of the occipital and parietal bones when pressure is applied. X-ray of the lower extremities discloses a diaphyseal fracture of the right tibia. There are multiple transverse radiolucent band-like lesions with sclerotic margins in the tibial and fibular shafts bilaterally. Serum studies are most likely to show which of the following sets of findings?