What’s the function of transport media?

The primary functions of transport media include: 

• Acting as a protective barrier and preserving the inherent characteristics of the specimen during transportation until it reaches the laboratory for analysis 
• Sustaining the viability of specific pathogenic microorganisms that may be present within the specimen
• Preventing harmless commensals as well as harmful contaminants from overgrowing and overshadowing the pathogenic microorganism present in the specimen