Summarization Definition: serum total bilirubin (STB)> 34umol/L, causing a yellow color of skin, sclera and tissue fluid · Latent icterus: an increase of STB but not more than 34umol/L, without color changes of skin and sclera False jaundice: yellow skin and sclera but without hyperbilirubinemia, due to ingestion of some drugs and foods