Table 1Summary of INR differences between Labs A and B

PatientAverage INRINR Difference
Lab ALab B
10.9531.0500.097
20.8900.9630.073
31.0101.1000.090
41.0001.0970.097
Average0.9631.0530.089

INR = International Normalized Ratio

From: Using Lean Six Sigma® Tools to Compare INR Measurements from Different Laboratories Within a Community

Cover of Advances in Patient Safety: New Directions and Alternative Approaches (Vol. 3: Performance and Tools)
Advances in Patient Safety: New Directions and Alternative Approaches (Vol. 3: Performance and Tools).
Henriksen K, Battles JB, Keyes MA, et al., editors.

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