If they notice any spot\patch or abnormality in the lung X-ray they ask for a sputum test or an exiting X-ray you might have which is at least 6 months old. This is to rule out TB. If the spot in the old X-ray is the same size as the one visible in the current X-ray and has not grown or become worse it means there is no TD and you are good. Alternatively sputum test will also confirm presence of TB. I don’t exactly remember but I think they have to culture the sample for around 3 months. So if you go with a sputum test, you will be wasting 3 months before CIC will get your medical report. If you have an old X-ray which is at least 6 months old send that instead. In case not, you will have to wait for a min of 6 months before another X-ray can be done. You have to decide 3 months or 6 months
So even she can't do sputum, 6 months repeat xray will be fine?