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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