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

Exercise 32

Which of the following would be least affected in a specimen that has remained unpreserved at room temperature for more than 2 hours?

A. Urobilinogen

B. Ketones

C. Protein

D. Nitrite

Step 1 of 2

In room temperature, the air is neither hot nor cold. It is the comfortable temperature for people to live. It is about 20 degree Celsius.

• The sample should be tested within 2 hours of obtaining or else the sample is preserved.

• Compared to other elements like, urobilinogen, ketones, nitrites in urine, protein content in urine is slightly affected if not preserved (the specimen is preserved immediately after receiving).

Therefore, if an unpreserved urine specimen kept more than 2 hours in room temperature, the least affected is “protein”. Hence, the correct answer is option.