What is the most efficient method of specimen transport mentioned?

The pneumatic tube system is recognized as the most efficient method of specimen transport due to its speed and reliability. This system allows for rapid movement of specimens directly from one area to another within a facility, such as from the collection point to the laboratory. The use of an enclosed, air-driven tube minimizes the time specimens spend in transit, thereby reducing the risk of degradation or contamination, which is crucial for maintaining the integrity of the specimens.

In contrast, while postal services and manual delivery can be effective in some situations, they usually require more time and involve increased handling, which can introduce delays and possible complications. Courier services are often reliable and faster than traditional postal routes, but they still do not generally match the immediacy of a pneumatic tube system, especially in a healthcare setting where time is critical. The pneumatic tube system stands out for its direct, swift, and secure delivery method, making it the optimal choice for transporting medical specimens efficiently.