Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 30

Which of the following lipids is/are stained by Sudan III?

A. Cholesterol

B. Neutral fats

C. Triglycerides

D. Both B and C

Step 1 of 2

Lipid stains:

Lipids such as neutral fats, triglycerides and cholesterol passes through membrane of glomerulus that causes appearance of lipid containing cells, free fat droplets, and casts in sediment of urine.

• The stain Sudan III and Oil Red O stains these lipids.

• Neutral fats and triglycerides in presence of Sudan III stain produce orange-red color.

Therefore, “Neutral fats” and “triglycerides” are stained by Sudan III. Hence, the correct answer is option.