Q. When is a chest x-ray required?
A. Every applicant is required to undergo a chest x-ray if one of the following applies:
The applicant has a TST reaction of 5mm or greater of induration (including pregnant or possibly pregnant individuals)
The applicant has a positive IGRA result (including pregnant or possibly pregnant individuals)
The applicant was not required to undergo the TST or IGRA testing because of the exceptions specified in the TB Component of the Technical Instructions for the Medical Examination of Aliens in the United States (May 2008), and its update, applied to the applicant
The applicant has signs or symptoms of TB (regardless of the initial testing result)
The applicant is immunosuppressed (regardless of the initial testing result)
Q. If a chest x-ray is required, will USCIS accept Form I-693 without the full and formal chest x-ray report?
A. No. If a chest x-ray is required, the TB Component of the Technical Instructions for the Medical Examination of Aliens in the United States (May 2008), and its update require the civil surgeon to submit a full and formal chest x-ray report. The instructions for Form I-693 direct the civil surgeon to give the applicant a copy of the results of any testing conducted in relation to Form I-693 and a copy of the Form I-693, as submitted to USCIS.