Which statement about validation of new laboratory instruments is true?

• A. New instruments are validated by the manufacturer and may be used immediately.
• B. New instruments require no validation.
• C. Instrument validation should be performed by in-house testing, often with side-by-side comparisons.
• D. Validation is optional for newer instruments.

Answer: (C)

Validation ensures that a new instrument will deliver accurate and reliable results within the lab’s actual workflow, not just in the manufacturer’s environment. Because a lab’s methods, reagents, sample types, and operators shape how an instrument performs, you verify in-house that the instrument meets the lab’s acceptance criteria and aligns with existing results. The best approach is in-house testing, often involving side-by-side comparisons with the current instrument or a recognized reference method, across the instrument’s intended range. This confirms essential performance characteristics such as accuracy, precision, and consistency, and it ensures that outputs (like staining quality or measurement readouts) fit the lab’s standards before routine use. Relying solely on vendor validation or assuming validation is optional or unnecessary can miss issues that affect daily results and regulatory compliance.