A patient's potassium result today is markedly different from the result reported yesterday, and the change is flagged by the laboratory information system. What is this check called?
1Linearity check
2Delta check✓ 정답
3Correlation check
4Proficiency check
해설
Comparing a result with the previous result from the same patient and flagging changes beyond a defined limit is the delta check. It is designed to detect specimen mix-ups and other errors. Linearity and correlation studies belong to method evaluation.