--- title: What happens after an Alteration Detected result? description: Review an OPTOVERA alteration under the safety procedure and arrange a repeat within 30 minutes. 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[Optovera Knowledge base (en)](https://knowledge.sobereye.com/en?hsLang=en) 2. [Deployment and Operations](https://knowledge.sobereye.com/en/deployment-and-operations?hsLang=en) # What happens after an Alteration Detected result? ## Repeat within 30 minutes and review the pair classification under the Customer’s safety procedure. An Alteration Detected result means a significant response alteration was detected relative to the User's baseline. It does not identify the cause and does not determine impairment, intoxication, fatigue, or a medical condition. The result is followed by a confirmation measurement within the 30-minute confirmation window. A wait of 10–20 minutes before the confirmation measurement is recommended. The outcome is recorded as: - **Alteration Confirmed**: If a second Alteration Detected result is recorded for the same User within 30 minutes of the first, the pair is classified as Alteration Confirmed, assigned to the second result, and counts as one confirmed alteration. The first result is labeled Retested and is no longer valid as a standalone result and is not counted separately. - **Within Baseline Range**: If the repeat measurement for the same User returns Within Baseline Range within 30 minutes of the first, the pair is classified as Within Baseline Range, assigned to the second result. The first result is labeled Retested and is no longer valid as a standalone result and is not counted separately. - **Alteration Not Verified**: If no repeat measurement is completed for the same User within 30 minutes of the first result, the first result is classified as Alteration Not Verified. This indicates that the required verification step was not completed; there is no final classification of a completed pair. These confirmation statuses are shown in the dashboard. The Device shows the individual measurement result: Within Baseline Range or Alteration Detected. Qualified personnel then follow the Customer's procedure. Possible temporary protective measures include delaying the task, reassigning work, allowing a recovery period, or additional safety review. 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