Download form N-648, medical certification for persons with disabilities. When applying for US citizenship, you must demonstrate a certain level of knowledge of English (written, oral), knowledge of history and the principles and forms of the US government. You need to fill out form N-648 if you want to get an exception from the testing requirements due to physical or mental disability. Form N-648 must be sent along with the application for the naturalization of N-400. Fee for filing form N-648 is not charged. Download pdf file form N-648
Official USCIS Update
USCIS can change filing addresses, fees, and accepted editions without notice. Use the official links below before filing.
Current edition: 09/25/24
Verified: 2026-05-21
Filing fee: You can find the filing fee for Form N-648 by visiting our Fee Schedule page.
Where to file: You may submit this form with your completed Form N-400, Application for Naturalization , or separately at a later date.
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