Operations and Procedures:
Sample Analysis
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### Knowledge Review

Why is field screening performed? (Select all that apply)

| a. To avoid using more labor-intensive methods
| b. To provide additional credible information for sample threat assessment
| c. To screen for high risk agents to protect laboratory personnel and facilities
| d. To tentatively identify contaminants in the field which may reduce the time needed to confirm the existence of a contaminant
| e. All of the above

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