[Coding/Content] Bl

Bl is coded when the main content is blood.
It does not refer to a full anatomical structure; it refers to blood itself or the idea of bleeding.

Use it when the person names blood, a stream of blood, a blood stain, or bleeding.
It may be coded whether the blood is understood as human or animal.
If the response mainly centers on bones, organs, or body structure, first reconsider scoring-input/contents/An.
If the blood is part of a human or animal figure, Bl may be combined with scoring-input/contents/H or scoring-input/contents/A when appropriate.

Bl is not a color code; it does not replace chromatic determinant coding.
Bl and scoring-input/contents/An may both sound biological, but Bl centers on blood and An on anatomy.
It is not enough that the blot looks red. The person has to name blood or a clearly equivalent idea.