What is the recommended action to maintain sample integrity during transport?

• A. Expose to sunlight
• B. Keep samples at the correct temperature and minimize time
• C. Freeze all samples
• D. Shake vigorously to mix

Answer: (B)

Maintaining sample integrity during transport hinges on two factors: keeping the sample at the proper temperature and minimizing the time before analysis. Temperature control helps prevent changes in the analyte due to degradation, enzymatic activity, or microbial growth, which can all alter test results. Reducing transit time limits exposure to any factors that could cause instability, helping the sample reflect what was present at collection.

Actions outside this approach can compromise integrity. Exposing samples to sunlight can heat or photochemically alter components; shaking vigorously can cause mechanical damage like hemolysis; and freezing all samples isn't appropriate for every specimen and can damage some types of material. Following the recommended transport temperature and time keeps results reliable and representative of the original sample.