Physiology If a radioimmunoassay is properly conducted and the amount of radioactive hormone bound to antibody is low, what would this result indicate? A Plasma levels of endogenous hormone are high B Plasma levels of endogenous hormone are low C More antibody is needed D Less radioactive hormone is needed 💡 Explanation If a radioimmunoassay is properly conducted and the amount of radioactive hormone bound to antibody is low, what would this result indicate? ✓ Correct Answer: A. Plasma levels of endogenous hormone are high