Levey–Jennings Quality Control Chart Generator 📈
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Welcome to the LJ–Westgard QC Tool
Plot Levey–Jennings charts and evaluate your QC runs against Westgard multi-rules — instantly, right here in your browser.
1Paste your QC values into the Data Input box — comma, space, or newline separated.
2Optionally enter a Target Mean and SD to override calculated values.
3Click Plot Chart to generate your Levey–Jennings plot and Westgard rule analysis.
4Use Export PDF to download a clean A4 report, or Save to compare sessions over time.
Levey–Jennings Chart
Westgard Multi-Rules Engine
Levey–Jennings Plot
In control
Warning
Reject
Mean
±1 SD
±2 SD
±3 SD
OVERALL QC DECISION
—
QUALITY CONTROL ANALYTICS
Levey–Jennings Chart
with Westgard Multi-Rules Engine
Session Details
Analyst Name
Test Name
Month / Period
Data Input
Please enter at least 2 numeric values.
Custom Mean & SD
Use your own reference values instead of calculated ones
📅 Saved Sessions — Compare by Date
No saved sessions yet.
Click Save after plotting to store a result.
Click Save after plotting to store a result.
