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Table 6 Basic Diagnostic Studies

From: Expert panel consensus recommendations for diagnosis and treatment of secondary osteoporosis in children

Laboratory test

Variables to analyze

Blood count

 Blood chemistry

Calcium, ionized calcium, phosphorus, magnesium, total proteins, creatinine, urea, glucose, 25-hydroxyvitamin D3, PTH, TSH, free T4

  24-hour urine chemistry

Calcium, phosphorus, creatinine, tubular phosphorus reabsorption, sodium

 Urine screening

Ca/Creatininea

 Bone turnover makers

Total alkaline phosphatase

  1. aSample from a single urination, preferably first one in the morning