Green Blood Man!
When copper instead of iron carries oxygen in the blood, it turns green. Iron gives hemoglobin its red color but oxidized copper is green in color.
Dr Alana Flexman, of St Paul's Hospital, said: "During insertion, we normally see arterial blood come out. That's how we know we're in the right place. And normally that blood is bright red, as you would expect in an artery.”
"But in his case, the blood kept coming back as dark green instead of bright red. It was sort of a green-black. Like an avocado skin maybe.”
Further tests showed he had taken too many of a headache pills called Sumatriptan.
He was diagnosed a rare condition in which sulphur from the sumatriptan combined with the blood's hemoglobin to change its color (sulfhemoglobin).
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