A laboratory uses these Westgard QC rules as criteria for rejecting an analytical run: 13s, 22s, and R4sThe top chart is for control #1 and the bottom chart is for control #2. On which days are there QC violations?

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A laboratory uses these Westgard QC rules as criteria for rejecting an analytical run: 13s, 22s, and R4s
The top chart is for control #1 and the bottom chart is for control #2. On which days are there QC violations?

More than one answer is correct. Please select all correct answers