Why label specimens with two identifiers and a date/time, and what could happen if labeling is incorrect?

• A. To Expedite Processing in the Lab.
• B. To Prevent Misidentification and Ensure Traceability; Incorrect Labeling Can Lead to Wrong Patient Results, Misdiagnosis, Treatment Errors, and Liability.
• C. To Satisfy a Paper Requirement.
• D. To Distinguish Specimens by Color of Label.

Answer: (B)

Labeling specimens with two unique patient identifiers and the collection date/time focuses on preventing misidentification and ensuring traceability throughout the lab process. Using two identifiers (for example, full name plus date of birth or an MRN) creates multiple, independent checks that help guarantee the specimen truly belongs to the correct patient. The date and time stamp records when the specimen was collected, which is important for linking the sample to the right clinical context, assessing sample stability, and tracing the specimen through handling and processing steps.

If labeling is incorrect, the most serious risk is that results are attributed to the wrong patient. This can lead to a wrong diagnosis, inappropriate or unsafe treatment, and potential harm to the patient. It also raises liability for the healthcare facility and can cause delays or the need for redraws, wasting time and resources.

Other options miss the primary purpose: labeling is about accuracy, patient safety, and traceability, not simply expediting processing, satisfying paperwork, or differentiating by color.