Final answer:
The additive inside the blood culture bottles is called sodium polyanethol sulfonate (SPS), which serves as an anticoagulant and immune response inhibitor.
Step-by-step explanation:
The name of the additive inside the blood culture bottles is sodium polyanethol sulfonate (SPS). SPS is commonly used in blood culture media as an anticoagulant and inhibitor of certain types of immune responses, allowing for the optimal growth of any potential microorganisms present in the blood sample. This is important for accurately diagnosing infections. Additives like SST, heparin, and sodium citrate serve different purposes in various types of sample collection processes. For instance, additives are used to facilitate specific types of blood tests or to preserve certain compounds within the blood.