✔ 最佳答案
De Anza's requirement is:
1. Skin test within last 90 days of arrival of U.S.
2. If skin test is positive then bring X-ray.
Here is a definition on TB testing from
http://en.wikipedia.org/wiki/Tuberculosis_diagnosis
A complete medical evaluation for tuberculosis (TB) must include a medical history, a physical examination, a chest X-ray and microbiological examination (of sputum or some other appropriate sample). It may also include a tuberculin skin test, other scans and X-rays, surgical biopsy.
Good luck, see you around in Cupertino.