Marmite is 89% protein, and there is plenty of protein in wholemeal bread as well. There was a huge amount of protein in that breakfast. As for assuming that I need 20g protein at breakfast, are you assuming that I'm on a 2000 calorie diet? I weigh 100lb, I can't eat anything near that unless I want to put on weight rapidly. I'm eating the recommended amount of protein for my height (4'11) and weight. This breakfast was also a one-off before surgery, and it was all I could face after having to be woken up from sleep for it, and then go back to sleep afterwards. I also make breakfast a relatively small meal, as this fits best with my personal bodily rhythms, so it provides fewer calories, protein and so forth than my later meals do. Don't assume that everyone should have a large breakfast: in many cases it merely leads to unwanted weight gain, as has been shown by research. My theory is that it seems to go with body clock types, with night owls naturally being small breakfasters (if they breakfast at all).
I can't remember who suggested that I might have had fruit juice on my finger contaminating the results, but it's looking likely that this is what happened. I spoke to my GP and she said that she's tested my blood sugar countless times and it's never been anything like that. She's going to look into this to be on the safe side, though, she's very thorough. The nurse who took that fingerstick test should have flagged it up properly as a problem at the time, and at the least repeated the test or told a doctor that I might have undiagnosed diabetes. She did neither. The nursing staff were generally not the best at that hospital, and I'm going to be making a complaint about them once I have the energy.