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

Exercise 10

The presence of a pink precipitate in a refrigerated specimen is caused by:

A. Hemoglobin

B. Urobilin

C. Uroerythrin

D. Beets

Step 1 of 2

Turbidity of urine:

If the urine has suspended particles and not looking clear, the condition is termed as turbidity.

Non-pathologic Turbid urine:

The urine looks turbidly but there will be no pathogens present in it.

• Refrigerated specimen forms non pathologic turbidity.

• Carbonates, urates, and amorphous phosphates precipitation causes turbidity of refrigerated specimen.

• Amorphous urates in acidic urine cause dust of pink brick by the action of uroerythrin( pink pigment).

Therefore, “uroerythrin” causes pink precipitate in refrigerated specimen. Hence the correct answer is option.