It would appear that it is not just the Nitrogen levels that are different – everything is different. A more rational hypothesis would appear to be that the second sample quite simply isn’t blood.
! would suggest it is mostly inorganic contaminants – gold, copper, aluminum, calcium and silicon – and iron and chlorine in excess of the “common blood sample” (are any of these commonly used as or found in medieval pigments?). The carbon and oxygen could be from “some kind of fat or oil” – but could equally be a combination of charred organic matter (essentially charcoal) and oxides of the metals present.
The gold is almost certainly flaked off some gilding – most probably from some ornate container for the shroud.
I pointed out that you hypocritically only tout the backgrounds (often irrelevant to the matter at hand) of those with whom you agree. You ignore the credentials of those with whom you do not agree; for example, me.
A question, yes. But not the one posed. The question you were asked was whether the author had credentials in the field of biochemistry. The answer to that is not a listing of any of his credentials outside of it. The answer to that is either ‘yes’, or ‘no’, and everybody reading along pretty much knows which one is correct. Everybody reading along also knows exactly why you got all shy about it and replied with a copy-&-paste of his resume instead: It’s because of what is the correct answer to the question that immediately followed.
Yes. Gold leaf was used for illuminated manuscripts. Iron ochre was used in paint. I vaguely recall that copper oxide was too. And calcium is found in chalk.
You expect otherwise of the blood of Jesus? Of course this is evidence that the Shroud was wrapped around the body of a transcendent being. What more proof do we need of its authenticity?