What are common reasons for specimen rejection in laboratories?

Specimen rejection in laboratories is often attributed to factors that compromise the integrity or reliability of the test results. The correct response highlights several critical reasons: improper labeling, insufficient quantity, hemolysis, or contamination.

Improper labeling can lead to misidentification of specimens, resulting in incorrect patient data being associated with the test results. Insufficient quantity means that there may not be enough sample to perform the required tests, invalidating the testing process. Hemolysis, which is the breakdown of red blood cells, can alter the composition of the specimen and affect the accuracy of certain tests. Contamination introduces foreign substances into the sample, which can interfere with the assay and lead to inaccurate results.

In contrast, the other options focus on positive aspects of specimen handling, such as patient satisfaction, proper collection and labeling, and timely processing. While these factors are indeed essential for effective laboratory operation and quality patient care, they do not represent reasons for specimen rejection. The emphasis should be on conditions that could lead to errors or issues with the sample, which is what the correct answer addresses.