Andrew Ahn of Harvard Medical School cites the example of diabetes, for which the standard clinical test is a measure of the level of glucose in the blood.

INTERNATIONAL DIABETES: We need to assess RCT (reverse cholesterol transport) in order to measure the effect of drugs on promoting RCT. What is the major challenge of the methods?

Methods We established the diabetic model with alloxan and adrenaline injection, and the effect of the extracts of Maize tassel on diabetic model was observed by checking blood sugar.