Well, don't abandon what he said immediately.
Although it could have been worded better, it is possible that the question is surprisingly valid.
Believe it or not, the answer to the question as far as I see it, =is no.
Characters will leave blood on the wall when they are shot, and a blood "decal-ish thing" is shown on the entity when they are shot, too. However, there is absolutely no blood that remains on the enemy after being shot, because FPSC does not have limb recognition.
Until then, enemies will not retain any blood on themselves, period.
Evil has a new name. Demo out now!