What is the primary reason for specimen rejection in laboratory testing?

The primary reason for specimen rejection in laboratory testing is improper labeling. Accurate labeling is critical because it ensures that the specimen can be correctly matched to the patient and associated with the appropriate clinical information. If a specimen is mislabeled or lacking essential details such as the patient's name, identification number, or date of collection, it creates a significant risk for misinterpretation and errors in diagnosis and treatment. Proper identification is crucial for maintaining the integrity of the test results and for the overall safety of patient care.

While high cost of testing, lack of physician order, and inadequate testing facilities can affect laboratory operations, they are not the primary factors leading to the rejection of specimens. Specimen integrity and traceability are foundational to laboratory practices, making improper labeling the critical factor in ensuring that each specimen can be accurately tested and that results can be effectively utilized in patient management.