Question: What acute metabolic condition can be defined by the elevation of a yellow compound that occurs in normal catabolic pathway that breaks down heme in vertebrates? 
Sentence (from "Small Molecule Pathway Database"): The Small Molecule Pathway Database (SMPDB) is a comprehensive, high-quality, freely accessible, online database containing more than 600 small molecule (i.e. metabolic) pathways found in humans.
Relevant evidence: No