Fish-K

1-You need to inform your Physician about your illness, of course.

2-They wont deport you right away but they will do further test on your blood for confirmation. And the Medical Committee will decide for you.

Another thing, it depends on your job category. If the nature of your job falls on the list mentioned above by SAADI703, I am affraid that you wil NOT passed the medical to obtained work visa in Qatar. But if it is some admin job or manegerial post, there will be no problem on your visa. No one can cheat the Medical at Med-Com in Qatar. You can cheat in your home country but NOT here. They will traced and find out and if further test results unfit, a worker will automatically be deported within a week.