Chase-Aurbach test

Last reviewed 01/2018

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