Article is a very short summary of a linked online article, which is behind a paywall. Latter supposedly looked at blood and other fluids placed on mannequins and human volunteers in various positions to see whether they’d end up in positions like on the Shroud. The summary claims the results were not consistent. I recall reading past pro-Shroud articles, for free, doing similar kinds of analysis and stating their results were perfectly consistent with the Shroud’s stains. I recall the former seeming impressive when I’d read them but lack the expertise to compare them even if I would spend the paywall fee.
I think such a test would be inconclusive at best. Some of the blood could be fresh, some more congealed. We do not know how the body was removed; could have been inverted, could have been dropped, etc.