LJ–Westgard QC Tool
Plot Levey–Jennings charts, apply Westgard multi-rules, and log daily QC values to track trends over time.
1Enter QC values in the Data Input box, or use the Daily Log to add one value per day.
2Click Plot Chart — or in the Daily Log, click Plot from Log to chart all saved entries.
3Review the LJ chart, Westgard rules, and the overall QC decision.
4Export a PDF report or save a session for trend comparison.
Quality Control Analytics
Levey–Jennings Chart
with Westgard Multi-Rules Engine & Daily Log
LJ Chart & Westgard Rules
Daily QC Log
Saved Sessions
PDF Export
Session Details
Analyst Name
Test Name
Month / Period
Data Input
Please enter at least 2 numeric values.
Custom Mean & SD
Override calculated values with your own reference
📅 Daily QC Log
Daily QC Value Log
AUTO-SAVED
Date
QC Value
Please enter a valid date and numeric value.
Tip: Add one QC value per day. Use Plot from Log to generate the LJ chart from all saved entries in date order.
Entries are automatically saved in your browser's local storage and will persist when you close or refresh this page.
| # | Date | QC Value | Z-Score | Status | |
|---|---|---|---|---|---|
| No entries yet. Add a date and value above to start your daily log. | |||||
📊 Saved Sessions
Sessions — Compare by Date
No saved sessions yet. Click Save Session after plotting.
