Which element is essential for proper sample labeling and chain of custody?

Which element is essential for proper sample labeling and chain of custody?

• A. Correct patient ID
• B. Time of day of collection only
• C. Specimen volume
• D. Color of tube cap

Answer: (A)

Accurate patient identification is essential for proper sample labeling and maintaining chain of custody because the label must uniquely link the specimen to the patient, the test request, and every handling step from collection to result reporting. When the patient ID is correct, the sample can be traced reliably through storage, transport, and analysis, ensuring results go to the right patient and that accountability is maintained. Time of collection matters for processing and interpretation, but it does not by itself identify the patient or guarantee traceability. Specimen volume affects whether there is enough material for testing, not who the specimen belongs to or its custody. The color of the tube cap has no role in showing who the patient is or in tracking the specimen through the workflow.

Accurate patient identification is essential for proper sample labeling and maintaining chain of custody because the label must uniquely link the specimen to the patient, the test request, and every handling step from collection to result reporting. When the patient ID is correct, the sample can be traced reliably through storage, transport, and analysis, ensuring results go to the right patient and that accountability is maintained.

Time of collection matters for processing and interpretation, but it does not by itself identify the patient or guarantee traceability. Specimen volume affects whether there is enough material for testing, not who the specimen belongs to or its custody. The color of the tube cap has no role in showing who the patient is or in tracking the specimen through the workflow.