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How do skin tests help diagnose idiopathic pulmonary fibrosis (IPF)?

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Tuberculosis causes symptoms that are like IPF, so you may need a test to rule out this disease. Your doctor uses a tiny needle to inject a substance under the top layer of skin on your arm. This will form a small bubble, like a blister.

You'll need to see your doctor or lab technician 48 to 72 hours later to see if there's a reaction, which will look like a red, swollen bump.

SOURCES:

National Heart, Lung, and Blood Institute.

Coalition for Pulmonary Fibrosis: "Facts About Idiopathic Pulmonary Fibrosis."

Johns Hopkins Medicine Health Library.

Lab Tests Online (American Association for Clinical Chemistry).

Reviewed by Jennifer Robinson on April 22, 2018

SOURCES:

National Heart, Lung, and Blood Institute.

Coalition for Pulmonary Fibrosis: "Facts About Idiopathic Pulmonary Fibrosis."

Johns Hopkins Medicine Health Library.

Lab Tests Online (American Association for Clinical Chemistry).

Reviewed by Jennifer Robinson on April 22, 2018

NEXT QUESTION:

How do exercise tests help diagnose idiopathic pulmonary fibrosis (IPF)?

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