@billchitwood, I just read some of your posts, and I am sorry that you are caught between getting care for your husband and his resistance to accepting medical care. The fatigue, the swelling, the drop in blood pressure and the pain, and the falls are symptoms that, in my opinion, would be best diagnosed and treated at an appointment rather than a phone call. I think it would be appropriate for you to ask whether he needs to get a blood test or urine sample ahead of the appointment, but my experience is that the labs are going to be ordered after the doctor decides what labs to order.
It is already Friday afternoon, but do you think you could call on Monday to make an appointment? Tell them what he is experiencing. Make a list of the prescriptions medicines and all over-the-counter medications that he is taking. And when/if he is taking them.
Do you have means to transport him to the doctors office?