When handling atypical results, the investigation must include a review of _______ to identify possible deviations or errors. Response:

Question

Options

• Athe cafeteria menu
• Btest data and control samples
• Cprevious marketing campaigns
• Dthe annual holiday schedule

• A
  15% (6)
• B
  76% (31)
• C
  5% (2)
• D
  5% (2)

Explanation

When atypical (unexpected or out-of-range) results occur in a laboratory or quality control setting, reviewing test data and control samples (B) is the standard investigative step. Control samples are run alongside patient/test samples specifically to detect errors, drift, or deviations in the testing process - they serve as the benchmark for whether the system was functioning correctly at the time of the atypical result.

• A (cafeteria menu) is irrelevant to laboratory investigation procedures.
• C (previous marketing campaigns) has no bearing on result accuracy or error detection.
• D (annual holiday schedule) is unrelated to identifying technical deviations.

Memory tip: Think "ATD" - Atypical results → Test data & controls → Deviation check. Controls are your built-in alarm system; when results look wrong, you check whether the alarm was working.

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