Brother, you have to check it carefully, i couldn't remember when but for sure ive read it in the MOI website that they are implementing medical test from the country of origin of a person wishing to enter Qatar. This include countries of Vietnam, Singapore, Nepal, India & etc... including the philippines.

Please call the philippine Embassy to check the status of the medical test law of immigration here in Qatar.

Embassy No. +974-4831585

Hope this helps lot with your queries.