In recording laboratory results, always indicate the date of analysis.

• A. True
• B. False
• C. Not applicable
• D. Sometimes

Answer: (A)

The date of analysis is essential for traceability and data integrity. Recording when a result was generated ties the measurement to a specific time, which allows you to verify that it was produced under appropriate method conditions, with the right instrument calibration, and using valid reagents. This timing information also enables reliable comparisons with other results, trend analysis, and regulatory or quality audits. Without the date of analysis, a result could be misinterpreted, misdated, or impossible to reproduce later, especially if instruments drift, reagents expire, or methods are updated. It’s standard practice to include the date of analysis on every result, and you may also record the sample collection date, but the analysis date is always needed to interpret and validate the data.