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Alpha-1 Antitrypsin Deficiency Explained

Signs, Symptoms and Treatment

From About.com

Created: May 5, 2005

About.com Health's Disease and Condition content is reviewed by Sanja Jelic, MD

Alpha-1 antitrypsin deficiency is a genetic disorder that causes low or no levels of the protein, alpha-1 antitrypsin (AAT). The lack of this protein may cause liver and lung disease over time. Alpha-1 antitrypsin deficiency is often undetected for many years, and although treatable, the disease is not curable.

Signs and Symptoms

  • Shortness of breath at rest or with exercise
  • Wheezing
  • Coughing
  • Repeated lung infections
  • Sputum production
  • History of suspected allergies and/or asthma
  • Testing

    Alpha-1 antitrypsin deficiency can be diagnosed through blood testing. A simple, quick test can be done with just a prick of your finger. There are three types of Alpha-1 antitrypsin deficiency tests that can be used to detect this condition:

  • Alpha-1 genotyping examines your genes and determines your genotype
  • Alpha-1 antitrypsin PI type or phenotype test determines the type of AAT protein
  • Alpha-1 antitrypsin level test determines the amount of AAT in your blood
  • Source: Alpha-1 Foundation

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    7. Alpha-1 Antitrypsin Deficiency - Emphysema - Genetic Lung Diseases - Inherited Lung Diseases

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