A urine specimen containing a large amount of precipitated amorphous material may have been preserved using:
A) Refrigeration
B) Phenol
C) Formalin
D) Toluene

Question

Quizplus · Accepted Answer

Refrigeration helps to slow down the chemical and bacterial reactions in urine, which can cause precipitation of amorphous material. Therefore, refrigeration is the best choice for preserving a urine specimen containing a large amount of precipitated amorphous material. Phenol, formalin, and toluene are not typically used to preserve urine specimens.

A Urine Specimen Containing a Large Amount of Precipitated Amorphous