PTH infusion test

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This test consists of infusing the subject with parathyroid hormone and measuring urinary phosphate and cAMP.

Using this test the two types of pseudohypoparathyroidism can be distinguished:

  • type I:
    • cAMP levels do not rise
    • phosphate levels do not rise

  • type II:
    • cAMP levels do rise
    • phosphate levels do not rise

Last reviewed 01/2018