The chest X-ray report three months ago can be used as a family physical examination.

Of course. The chest X-ray report three months ago can be used as a home medical examination, because the validity of the home medical examination is usually one year, that is to say, the results of the home medical examination can be used as a valid certificate within one year. If you need to have another physical examination at home within one year, you need to have another physical examination. So the chest X-ray report three months ago can be used as a family physical examination.