I knew my CRP had occasionally been logged as abnormal then returned to within range. I just reviewed my levels in my GP record and noted that before 2014, the normal reference range was logged at below 10. Then it changed to below 5 where I sat until 2019 when I had an anaphylaxis. Since then it has been between 5-10, once or twice below 5. GP has never suggested investigating the rise. I have gained weight in those years. They coincide with when I had to stop doing exercise.
Just got some routine blood test results so I've added my vote (for 1-2). Previous tests 3 months into Long Covid: CRP was 2, eosinophils high, plasma viscosity high, everything else tested was within normal ranges. Recent tests 3 years into Long Covid: CRP is 1, eosinophils still high, plasma viscosity not tested, everything else as before.
Thank you @Hutan, @Jonathan Edwards, @Woolie and others for all the interesting CRP info, it's always something I have wondered about. I voted 10-20. It fluctuates from normal ie <6 up to 19mg/L except of course the 2 times I had septicaemia and then it was up to 87. All with normal BMI (20-22) I also frequently have corresponding mild normocytic normochromic anemia, low haemoglobin, mild to moderate thrombocytosis and mildly elevated white cell counts as well as low sodium and osmolality. Iron is mostly normal but transferrin saturation low despite good dietary intake. In the early years while I while still able to work and drive ESR also was elevated and CRP back then was sometime 30 or 40s, ERP is mostly in normal range now. ANA and thyroid occasionally tested and always normal. My impairment level course is similar to @DigitalDrifter and @Evergreen in that it relapses for months/year at a time and remit for much fewer months but not usually back to previous baseline and I have generally deteriorated over time so now mostly bedbound/housebound depending on whether in relapse or not. Bad NMH from the start and POTS/SFN added last 10years