Not everyone knows that, in the analysis of the blood lipid profile, the pigmentation of fats can be very useful in order to separate them and accurately distinguish them (laboratory analysis); often, the method involves freezing or separation with paraffin.
The coloring (called Staining ) of fatty acids, triglycerides, lipoproteins and other lipids takes place by means of added molecules called lysochromes ( lysochromes ), or liposoluble dyes. These agents can allow the qualification (distinction) of a certain type of lipid thanks to the different tonality that the latter assumes with the process. Some examples of pigment are: Sudan IV, Oil Red O and Sudan Black B.
