Westgard Rules
Applied rule set and live violations across the current filter.
Filters
Active rules
1-2s
warning · 93 hits
One control result exceeds ±2 SD (warning)
1-3s
reject · 25 hits
One control result exceeds ±3 SD (reject)
2-2s
reject · 11 hits
Two consecutive results exceed ±2 SD on the same side
R-4s
reject · 22 hits
Range between two consecutive results exceeds 4 SD
4-1s
reject · 31 hits
Four consecutive results exceed ±1 SD on the same side
10x
reject · 50 hits
Ten consecutive results fall on the same side of the mean
shift
warning · 112 hits
Six consecutive results on the same side of the mean (shift)
trend
warning · 4 hits
Six consecutive results moving in the same direction (trend)
Recent violations
| Run | Assay | Instrument | Rules | z |
|---|---|---|---|---|
| 9/24/2026, 9:39:00 AM | Troponin I | Immuno I1 | shift | -1.15 |
| 9/24/2026, 9:33:00 AM | Sodium | Chem Analyzer A2 | shift | 1.60 |
| 9/24/2026, 8:32:00 AM | MIC Ceftriaxone Control | Micro M1 | 1-3s shift 10x | -3.07 |
| 9/24/2026, 8:20:00 AM | Alanine Aminotransferase | Chem Analyzer A1 | shift 10x | -0.53 |
| 9/24/2026, 7:35:00 AM | Platelets | Hema-Line H1 | 4-1s shift | 1.41 |
| 9/24/2026, 7:35:00 AM | Platelets | Hema-Line H1 | shift | -0.16 |
| 9/24/2026, 7:27:00 AM | Hemoglobin | Hema-Line H1 | shift 10x | 1.18 |
| 9/24/2026, 7:27:00 AM | Hemoglobin | Hema-Line H1 | 1-3s 2-2s 4-1s shift 10x | 3.42 |
| 9/24/2026, 7:20:00 AM | ABO Reaction Strength | IH-Analyzer B1 | 1-2s | -2.51 |
| 9/23/2026, 9:39:00 AM | Thyroid Stimulating Hormone | Immuno I1 | 1-3s R-4s | 3.90 |
| 9/23/2026, 9:33:00 AM | Sodium | Chem Analyzer A2 | shift | 0.99 |
| 9/23/2026, 9:33:00 AM | Sodium | Chem Analyzer A2 | shift 10x | -0.36 |
| 9/23/2026, 8:35:00 AM | Prothrombin Time | Coag-One C1 | 1-3s | 3.35 |
| 9/23/2026, 8:35:00 AM | Prothrombin Time | Coag-One C1 | 1-2s | 2.86 |
| 9/23/2026, 8:32:00 AM | MIC Ceftriaxone Control | Micro M1 | shift 10x | -1.12 |
| 9/23/2026, 8:22:00 AM | Creatinine | Chem Analyzer A1 | 1-2s 2-2s shift | -2.78 |
| 9/23/2026, 8:20:00 AM | Alanine Aminotransferase | Chem Analyzer A1 | 1-2s 2-2s shift 10x | -2.96 |
| 9/23/2026, 8:20:00 AM | Latex Agglutination Control | Micro M1 | 1-2s | 2.01 |
| 9/23/2026, 7:35:00 AM | Platelets | Hema-Line H1 | 4-1s shift | 1.83 |
| 9/23/2026, 7:35:00 AM | Platelets | Hema-Line H1 | shift | -1.53 |
| 9/23/2026, 7:27:00 AM | Hemoglobin | Hema-Line H1 | shift 10x | 0.50 |
| 9/23/2026, 7:27:00 AM | Hemoglobin | Hema-Line H1 | 1-3s 4-1s shift 10x | 3.01 |
| 9/22/2026, 9:33:00 AM | Sodium | Chem Analyzer A2 | shift | -0.67 |
| 9/22/2026, 9:30:00 AM | Potassium | Chem Analyzer A2 | 1-2s | -2.04 |
| 9/22/2026, 8:32:00 AM | MIC Ceftriaxone Control | Micro M1 | shift 10x | -0.04 |
| 9/22/2026, 8:26:00 AM | Glucose | Chem Analyzer A1 | shift | -0.76 |
| 9/22/2026, 8:22:00 AM | Creatinine | Chem Analyzer A1 | 1-2s shift | -2.93 |
| 9/22/2026, 8:20:00 AM | Alanine Aminotransferase | Chem Analyzer A1 | 1-2s shift 10x | -2.10 |
| 9/22/2026, 7:35:00 AM | Platelets | Hema-Line H1 | 1-3s 2-2s 4-1s shift | 3.06 |
| 9/22/2026, 7:27:00 AM | Hemoglobin | Hema-Line H1 | shift 10x | 0.46 |
| 9/22/2026, 7:27:00 AM | Hemoglobin | Hema-Line H1 | 4-1s shift 10x | 1.27 |
| 9/21/2026, 9:35:00 AM | POC Glucose | POCT Glucose Fleet | shift | 0.32 |
| 9/21/2026, 9:33:00 AM | Sodium | Chem Analyzer A2 | 1-3s 4-1s shift | -3.56 |
| 9/21/2026, 8:35:00 AM | Prothrombin Time | Coag-One C1 | 1-3s | 3.27 |
| 9/21/2026, 8:32:00 AM | MIC Ceftriaxone Control | Micro M1 | 1-2s 2-2s shift 10x | -2.27 |
| 9/21/2026, 8:32:00 AM | MIC Ceftriaxone Control | Micro M1 | 1-2s | 2.36 |
| 9/21/2026, 8:22:00 AM | Creatinine | Chem Analyzer A1 | shift | -1.14 |
| 9/21/2026, 8:20:00 AM | Alanine Aminotransferase | Chem Analyzer A1 | shift 10x | -1.56 |
| 9/21/2026, 7:35:00 AM | Platelets | Hema-Line H1 | 1-2s | 2.18 |
| 9/21/2026, 7:35:00 AM | Platelets | Hema-Line H1 | 1-2s trend | -2.76 |