Alpha-1 Antitrypsin

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Also known as: A1AT; AAT

At a Glance

Why Get Tested?

To help diagnose the cause of early onset emphysema and/or liver disease. To establish the risk of developing alpha-1 antitrypsin-related emphysema and/or liver disease and the likelihood that children might inherit the risk

When to Get Tested?

When you show signs of liver disease as an infant or young child, when you develop emphysema (a disease that damages the lungs) before age 40, or when you have a close relative with alpha-1 antitrypsin deficiency

Sample Required?

A blood sample taken from a vein in your arm

Test Preparation Needed?

None