Which characteristic of a sample does not adhere to CDC's labeling recommendations?

The characteristic of a sample that does not adhere to the CDC's labeling recommendations is the patient's insurance information. The Centers for Disease Control and Prevention (CDC) emphasizes the importance of labeling samples accurately to ensure proper identification and handling during testing. Key elements of sample labeling typically include the name of the test, which helps to identify what analysis is to be performed, the expiration date of the sample, ensuring that the sample is tested within a viable timeframe, and the location where the sample was collected, which provides context regarding potential contamination or relevance to the patient's overall health.

In contrast, including patient insurance information on a sample's label does not directly contribute to the identification or integrity of the sample in a laboratory context. Insurance details are administrative information related to billing and reimbursement rather than clinical or logistical information necessary for the processing or testing of the specimen. Thus, it is not considered a required element for compliance with CDC labeling recommendations.