Serum Calcium Levels?? At diagnosticcentrepune.in Calcium concentration, both total and free, is characterized by a high physiological variation, depending on age, sex, physiological state (eg, pregnancy), and even season (owing to the seasonal variation of vitamin D, which is directly involved in the regulation of calcium concentration). Therefore, separate reference intervals have been established according to the age and sex of the individual being tested. Total calcium reference ranges in males are as follows: Younger than 12 months: Not established Age 1-14 years: 9.6-10.6 mg/dL Age 15-16 years: 9.5-10.5 mg/dL Age 17-18 years: 9.5-10.4 mg/dL Age 19-21 years: 9.3-10.3 mg/dL Age 22 years and older: 8.9-10.1 mg/dL Glovision Diagnostics is Best Diagnostics Center. We have best Sonography center. We are providing all Diagnostic facility under one roof. For more information visit at www.diagnosticcentrepune.in