Which of the following is not considered a correctable flaw?

The identification of a lack of specimen submission with the Chain of Custody Form (CCF) as not being a correctable flaw is accurate due to the critical nature of specimen availability in drug testing processes. For testing to be valid, there must be a specimen for analysis; if there is no specimen submitted, the entire testing process is compromised, which cannot be rectified after the fact.

In contrast, errors such as mistakes in the collector's signature, incorrect temperature notation, or a blank remarks field can all be addressed and corrected within the paperwork or procedures. These issues involve minor administrative corrections that do not fundamentally affect the integrity of the testing process as long as a valid specimen is available for testing.

Therefore, the lack of specimen submission represents a significant issue that cannot be corrected once the sample is not provided, reinforcing its classification as not a correctable flaw.