Biometric quality control process
Systems and methods configured to guide and manage laboratory analytical process control operations. A Biometric quality control (QC) process application is configured to monitor bias and imprecision for each test, characterize patient population data distributions and compare, contrast, and correlate changes in patient data distributions to any change in QC data populations. The Biometric QC process monitors the analytical process using data collected from repetitive testing of quality control materials and patient data (test results). The QC process identifies the optimal combination of, for example, frequency of QC testing, number of QCs tested, and QC rules applied in order to minimize the expected number of unacceptable patient results produced due to any out-of-control error condition that might occur. A method of determining an optimum frequency for bracketing patient data into batches using a minimum number of quality control samples is also provided.
1. A computer-implemented method of determining a bracketed quality control testing strategy on patient test data, comprising;
acquiring patient test data from one or more laboratory instruments;
determining an average run length, using the computer, having a desired number of unacceptable errors reported for a selected QC Rule;
calculating an optimum frequency of testing control samples, using the computer, to achieve a desired number of unacceptable results; and
testing the strategy on said patient data.
2. The method of claim 1 , wherein the desired number of unacceptable results reported has a value less than 1.
3. The method of claim 2 , wherein said value is greater than 0.90.
4. The method of claim 3 , wherein said value approaches 1.
5. The method of claim 1 , further comprising calculating a number of unacceptable results reported for a selected frequency of testing control samples.
6. A computer-implemented method of implementing a bracketed quality control testing strategy on patient data, comprising;
acquiring patient data from one or more laboratory instruments;
selecting a QC Rule;
for the selected QC Rule, calculating an average run length, using the computer, before an unacceptable error is reported;
selecting a number of unacceptable errors reported for the selected QC Rule;
calculating an optimum frequency of testing control samples, using the computer, to achieve the selected number of unacceptable results reported; and
applying the strategy to said patient data.
7. The method of claim 6 , wherein the desired number of unacceptable results reported has a value less than 1.
8. The method of claim 7 , wherein said value is greater than 0.90.
9. The method of claim 8 , wherein said value approaches 1.
10. The method of claim 6 , further comprising:
selecting a frequency of testing control samples; and
calculating a number of unacceptable results reported for the selected frequency of testing control samples.
11. A computer-implemented method of determining a bracketed quality control testing strategy on patient test data, comprising:
acquiring patient test data from one or more laboratory instruments;
determining an average run length, using the computer, having a desired number of unacceptable errors reported for a selected QC Rule;
calculating an optimum frequency of testing control samples, using the computer, to achieve a desired number of unacceptable results;
testing the strategy on said patient data by testing said control samples at the optimum frequency; and
providing an alert if one of the tested control samples exceeds an established quality control limit for the selected QC Rule.
12. The method of claim 11 , wherein the desired number of unacceptable results reported has a value less than 1.
13. The method of claim 12 , wherein said value is greater than 0.90.
14. The method of claim 13 , wherein said value approaches 1.
15. The method of claim 11 , further comprising calculating a number of unacceptable results reported for a selected frequency of testing control samples.