blood tests for AAT levels

A blood test for Alpha-1 Antitrypsin (AAT) measures the level of this protein in your blood. AAT is produced by the liver and helps protect your lungs from damage caused by enzymes that can break down tissue. Low AAT levels can increase the risk of lung diseases like COPD or emphysema, especially if you smoke or have a family history. The test can identify if you have a deficiency, which may require further evaluation or treatment. Results are compared to normal ranges, guiding healthcare decisions about lung health and potential treatments.