Control Values for the PT Reagent Have Been Established As

Control values for the PT reagent have been established as: Level 1: mean - 10.4, 1sd - 0.6; Level 3: mean - 24.6, 1 sd - 1.8. Control values for the morning QC were Level 1: 11.7; Level 3: 28.9. What is the next step?

A) Proceed with patient testing, QC is acceptable
B) Both controls are above acceptable range, rerun controls
C) Both controls are above acceptable range, check reagents for correct placement on the analyzer and correct handling. Correct problem before proceeding
D) Proceed with patient testing, Level 1 is within 3 sd.

Correct Answer:

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