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Serum parameters and 24 h urinary calcium secretion over all measurements. Normal values (may vary depending on laboratory methods): serum calcium 2.2–2.6 mmol/L, serum creatinine levels 0.5–1.3 mg/dL, serum creatinine associated estimated GFR 90–120 mL/min, serum cystatin C 0.5–0.96 mg/L, serum TSH 0.27–4.2 mIU/L, and renal calcium excretion within 24 h 2.50–8 mmol/24 h.
