Here is the relevant Q&A posted on USCIS website: http://www.uscis.gov/archive/archive-news/questions-and-answers Q. Are there any exceptions to the initial TB testing requirement? A. Yes. Under the May 2008 TB Component of the Technical Instructions for the Medical Examination of Aliens in the United States, and its update, an applicant may not be required to undergo the initial TB screening testing with a TST or IGRA under the following circumstances: • Applicants providing written documentation (with a health care provider's signature) of a TST reaction of 5 mm or greater of induration. For this TST exception to apply, the written documentation must include: 1) The date of the test; 2) The millimeters of induration; 3) The type of PPD used; 4) The testing health care provider's name, signature, and office information. A verbal history from an applicant of a positive TST reaction is not acceptable. • Applicants who have a history of a severe reaction with blistering to a prior TST. • Applicants providing written documentation (with the health care provider's signature) of a prior positive IGRA. If more than one IGRA has previously been performed, the most recent result should be used by the civil surgeon. The written documentation must include: 1) The date of the test; 2) The type of IGRA performed; 3) The test results including units of measurement; 4) The testing health care provider's name, signature, and office information. A verbal history from the applicant of a positive IGRA result is not acceptable. If one of these exceptions applies, the civil surgeon is directed to annotate the Form I-693 accordingly and to have the applicant undergo a chest x-ray.
【在 p*******y 的大作中提到】 : Here is the relevant Q&A posted on USCIS website: : http://www.uscis.gov/archive/archive-news/questions-and-answers : Q. Are there any exceptions to the initial TB testing requirement? : A. Yes. Under the May 2008 TB Component of the Technical Instructions for : the Medical Examination of Aliens in the United States, and its update, an : applicant may not be required to undergo the initial TB screening testing : with a TST or IGRA under the following circumstances: : • Applicants providing written documentation (with a health care : provider's signature) of a TST reaction of 5 mm or greater of induration. : For this TST exception to apply, the written documentation must include: