blood sugar vs maltose

blood sugar

noun
  • Glucose in the blood. 

  • The amount of glucose in a person's blood. 

maltose

noun
  • A disaccharide, C₁₂H₂₂O₁₁ formed from the digestion of starch by amylase; is converted to glucose by maltase; it is an isomer of trehalose 

How often have the words blood sugar and maltose occurred in a corpus of books? (source: Google Ngram Viewer )