Blood Tests

I was chatting with a guy online a few days ago about a possible hookup. The conversation got to the point where he asked me if I will bareback. I know from previous experience that everyone will claim they are clean regardless if they have been tested recently or not. So, I asked "How do you know you are clean?" His response was "Had blood test august."

Also, I have had guys to tell me that they had a "check-up" a few months ago and everything was fine. So, what! I have an annual "check-up" too, then get tested specifically for HIV/STDs every three months in addition to my check-up!!

It is my understanding that HIV/STD tests are routinely done to protect the healthcare workers, but no information about the patient's HIV/STD status will be disclosed to the patient unless these tests were requested by the patient. On the other hand, I can not imagine a patient popping positive and the doctor not having that discussion with him/her.

Let's say a guy has a three-month check-up for his high cholesterol. Will his blood be screened for HIV/STDs also?

I think my basic questions are:

Are patients' blood routinely screened for HIV/STDs to protect the healthcare workers?

How much information can be given to a patient if he/she did not specifically request an HIV/STD screening?

What if the patient pops positive for HIV/STDs without requesting these screenings?