What percentage threshold defines Category 1 Consistent Process Control in FSIS testing?

• A. 25% or less
• B. 50% or less
• C. 75% or less
• D. 100% or less

Answer: (B)

In FSIS testing, Category 1 Consistent Process Control is defined by how often the process produces acceptable results. If the rate of nonconforming test results is at or below fifty percent, the process is considered to have consistent control. This threshold shows that the plant is keeping results within an acceptable range with limited variability, which is why it stays in the Category 1 level and can rely on standard verification practices rather than intensified oversight.

If more than half of the results were nonconforming, the process would no longer be viewed as consistently controlled, and the plant would move to a higher category that triggers more frequent or extensive verification and corrective actions. The fifty percent cutoff serves as a practical boundary between acceptable and excessive variation in performance, balancing realism with the need to ensure safety.