One of 3 adaptations (uses) for this template that allows for self evaluation of those tests that might not be included in a commercial proficiency testing program.

Multi-Purpose Calculator:

• Use for results comparisons between labs, within lab, and vs. known calibrators, or other such materials used for verifying calibration

• Set allowable error limits using:
  
1. percent difference,
2. absolute difference, or
   
3. Standard Deviation PT Error Limit

Results are compared vs. the defined error limits, and interpretation of "acceptable" or "unacceptable" given.

SLT_420 External QA PT