Which of the following is not considered a DoD biological ID level?

In the context of biological identification levels within the Department of Defense (DoD), the focus is primarily on established testing protocols that ensure accurate detection and identification of biological threats. Initial Testing is essential for the first assessment of a sample, while Confirmatory Testing provides a second layer of verification to ensure the results' accuracy. Field Screening is also a critical step, as it is often conducted in situ to quickly assess potential biological threats before further laboratory analysis.

Repeat Testing is implicit in the testing protocols, as repeat tests can be necessary for validation purposes, especially when there is uncertainty in initial findings or to confirm results over time. However, it is not classified as a distinct biological ID level like the other methods. Therefore, it is not recognized in the same manner as the others in the DoD's testing hierarchy. In contrast, the other options represent formalized stages in biological ID processes that facilitate the structured identification of biological agents.