How should you handle specimens that require refrigeration during transport?

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When a specimen requires refrigeration, keeping it at the correct cold temperature all the way to analysis is essential to preserve its integrity and ensure accurate test results. The best approach is to follow the lab’s specified cooling protocol for that specimen, which tells you the exact temperature range and method to use (for example, whether it must be refrigerated at 2–8°C, placed on ice, or carried in a cold chain). Along with maintaining the proper temperature, label the specimen clearly to indicate that it must be kept cold and indicate any transit requirements, and arrange for the shortest possible transit time to minimize degradation. Transporting a specimen warm or at room temperature when refrigeration is required can lead to unstable analytes and unreliable results, so you should not deviate from the established cooling instructions.