Parathyroid hormone


  • Serum

  • Intact parathyroid hormone: 10-50 pg/ml
  • N-terminal fraction: 8-24 pg/ml
  • C-terminal fraction: 0-340 pg/ml

  • To diagnose suspected parathyroid disorders
  • To differentiate between clinical diagnoses that result in calcium and phosphate abnormalities



  • Noncompliance with fasting requirements
  • Elevated lipid levels