Final answer:
Elevated b-hCG levels can be observed in both bone diseases and normal pregnancies. In bone diseases like Paget's disease, the elevation is due to bone deformities or areas of resorption. In normal pregnancies, elevated b-hCG levels are produced by the placenta and can be a sign of a healthy pregnancy.
Step-by-step explanation:
Elevated levels of b-hCG (beta-hCG) can be observed in both bone diseases and normal pregnancies, although the reasons for elevation differ.
In bone diseases like Paget's disease, blood levels of an enzyme called alkaline phosphatase are typically elevated. This elevation is due to the presence of bone deformities or areas of bone resorption, which can be detected through imaging studies and lab tests.
In normal pregnancies, b-hCG levels rise and can be a sign of a healthy pregnancy. These elevated levels are produced by the placenta and can be detected in the blood or urine of pregnant women. Monitoring b-hCG levels during pregnancy can help track the progress and viability of the pregnancy.