Hi Michael,
I had low haemoglobin at one stage, my GP works out of a large group practise, and I think it was one of the nurses that started to get concerned about my haemoglobin at one of those 'annual review' blood test appointments, they have me on their books as having PCa, high blood pressure and Type 2 diabetes, she hadn't read all of my notes, and when I pointed out that I had had two bouts of radiotherapy this seemed to explain the low haemoglobin to her satisfaction.
:)
Dave