calcium Ca 46-chloride aqueous solution
(KAL-see-um … KLOR-ide AY-kwee-us suh-LOO-shun)
A substance used to study the turnover of bone tissue in certain diseases, such as osteoporosis or cancer that has spread to the bone. Calcium Ca 46 is a form of calcium that gives off radiation. It is passed from the body in the urine.