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C1 Esterase Inhibitor, Serum

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C1 Esterase Inhibitor, Serum

Accredited Facility E-report Qualified Specialists

This test measures C1 esterase inhibitor (C1-INH), a protein that regulates the complement system. It helps diagnose hereditary angioedema and evaluate complement pathway dysfunction.

  • If hereditary angioedema is suspected.
  • During evaluation of recurrent swelling episodes.
  • When unexplained facial, abdominal, or airway swelling occurs.
  • During assessment of complement system disorders.
  • As recommended during immunology evaluation.
  • No fasting is usually required.
  • A blood sample will be collected from a vein.
  • Inform the healthcare provider about swelling episodes or family history.
  • Share previous complement or immune-related test results if available.
  • Follow all laboratory instructions before sample collection.
    • C1 Esterase Inhibitor, Serum
    No labs currently offering this test.