Sample and Data Handling
Sample Handling
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### PRL vs MSL Support

If it is determined that sample collection and analyses are necessary, responders, including the ASR, PRL and MSLs must communicate effectively for sample collection and analysis efforts to be beneficial. The ASR will identify and contact a laboratory to serve as the PRL. In some cases, the PRL may not be able to meet all of the analytical needs, due to either limited analytical capability or capacity. If the PRL is unable to meet analytical support needs, a capable MSL(s) will need to be identified.

Before agreeing to provide support, a laboratory should consider the following:

- Capability and Capacity
- Data turnaround
- Management approval
- Nature of threat
- Level of analysis (i.e., screening or confirmatory analysis)
- Proficiency or certification (if available for the contaminant of concern)
- Availability of funding and/or vehicle for reimbursement
- Number of samples
- Estimated concentration of contaminant
- Required level of internal chain-of-custody (COC)
- Availability of reagents, supplies, and equipment
- Special conditions (e.g., data ownership)
- Duration of support
- Data quality objectives (end-use)

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