When a sample needs to be kept cold?

When a sample needs to be kept cold?

• A. Place in insulating container/ Place container on ice
• B. Refrigerate immediately
• C. Keep at room temperature
• D. Warm in a heat block

Answer: (A)

Keeping a specimen cold is essential to slow down chemical and biological changes that can alter test results. The best way to ensure it stays cold during handling or transport is to place the container inside an insulating container and keep it on ice. The insulating container minimizes heat gain from the surroundings, while the ice actively cools the sample to near 0–4°C, helping preserve the analytes until processing. Placing the sample directly in a refrigerator can be effective in a controlled environment, but during transport or temporary storage, the insulated container with ice provides a more reliable cold chain. Keeping the sample at room temperature or warming it in a heat block would accelerate degradation and skew results.

Keeping a specimen cold is essential to slow down chemical and biological changes that can alter test results. The best way to ensure it stays cold during handling or transport is to place the container inside an insulating container and keep it on ice. The insulating container minimizes heat gain from the surroundings, while the ice actively cools the sample to near 0–4°C, helping preserve the analytes until processing.

Placing the sample directly in a refrigerator can be effective in a controlled environment, but during transport or temporary storage, the insulated container with ice provides a more reliable cold chain. Keeping the sample at room temperature or warming it in a heat block would accelerate degradation and skew results.