xrays are not the only way to detect TB, and a good radiologist/x-ray technician would have no problem whatsoever detecting it.

if the technician detects anything they'd ask for a sputum sample which would be sent to the lab for further diagnosis. at his point whether TB is latent or active is irrelevant..chances are they would still be able to find it. Being tested positive for TB would automatically ban anyone from attaining a residence permit both in UAE and Qatar.

it could be worthwhile to consider the offers anyway..?