[tacticalogic]

Answer my blood question. And you can stipulate any functional test you want, understanding that my arrowhead is identical in every aspect that we can measure, except your functional test which determines “arrowheadness” functionality.(obviously, the sample has passed the test)

To answer your question, dried blood does not pass the test of function. Dried blood is not blood, it used to be blood but it isn't any more. It may accurately be described as "blood evidence" or "blood residue", but it is not blood.

The second sentence is not particularly coherent. Identical to what?

[AndrewC]

Dried blood is not blood

Dried blood is blood. Dried is a descriptor. Blood in the urine does not function as blood but it is still blood.

Sorry, I forgot to add .. to the sample arrowhead.