Good Morning Doctor, I Am Smitha From Nellore . My

good morning doctor,
i am smitha from nellore .
my mother is having throat problem. warm blood is coming from throat and she is not having any pain. she has undergone with blood test. all are normal. little colestrol is there. she is using tablets for that.frequently she is suffering from fever and cold with cough. can you please suggest the test what is has to do. thank you doctor.