What Is the Normal Calcium Level in the Blood?

By Staff WriterLast Updated Mar 25, 2020 8:19:41 AM ET

Normal calcium levels in the blood range from 8.8 to 10.4 mg/dL in adults and 6.7 to 10.7 mg/dL in children. However, levels outside this range are not always a concern; doctors may interpret results differently based on the age of the patient and other health factors.