Canadian gent oozes green blood

The medical journal The Lancet reports on the case of a hospitalized man who was discovered to have green blood.

“It was sort of a green-black. … Like an avocado skin maybe,” said the patient’s doctor, Dr. Alana Flexman.

The patient may have had a condition called sulfhemoglobin, caused by a drug interaction that makes sulphur bind to red blood cells, preventing oxygen from binding. Warning, the article loaded with Mr. Spock jokes about the incident