Question

using sterile sample containers is an essential feature of the general blank procedures used to prevent contamination during specimen collection. need help? review these concept resources.

Explanation:

The sentence is about specimen collection procedures to prevent contamination, and using sterile containers is part of aseptic techniques. In the context of medicine/health (a subfield of Natural Science), "aseptic" fits as it relates to preventing infection/contamination in specimen collection.

Answer:

aseptic