In reply to Bjartur i Sumarhus:
I’ll keep it as simple as possible, because the more detail I go in to the more I am likely to get wrong. If anyone want to correct anything, I really won’t be offended.
The numbers that are being talked about are an athletes off-score, this is a measure of the amount of red blood cells in the blood, obviously red cells are the oxygen carriers enabling your body to supply oxygen to your muscles more efficiently.
For a female the average off-score is around 70, but it can naturally be higher, with the ‘suspicious’ figure of 103 being likely to happen naturally in 1 in 100 women. The off-score can rise or fall in an individual subject to illness (anaemia would make it fall), medication both banned and authorised (I think), training at altitude and dehydration. Men naturally have a higher off score and the ‘suspicious’ trigger is higher for them.
Radcliffe’s off-scores predate blood passports, which establish a baseline for an athlete, allowing an expert to assess the likelihood of a ‘suspicious’ off score based on a baseline for that athlete and any recorded factors such as those identified above. At least one of Radcliffe’s blood samples was taken immediately after a race in very hot conditions, which would invalidate it now, as there is a two hour rule to try and eliminate scores being affected by dehydration. I hope that makes some sense.