How many primary Beta Lactam drugs must antibiotic screening tests detect to be approved for use?

In the context of antibiotic screening tests for milk, detecting a certain number of primary Beta Lactam drugs is crucial for ensuring milk quality and safety. The threshold for approval typically requires that the test can detect at least four out of the six primary Beta Lactam drugs. This standard is set to effectively identify the presence of antibiotic residues that could be harmful if they remain in the milk consumed by humans or animals.

By ensuring that four out of six are detected, the testing process maintains high safety standards, mitigating the risk of antibiotic contamination. If fewer than four are detected, it could lead to undetected residues in milk, creating potential health risks and not meeting food safety regulations. Therefore, the requirement for detection of four out of six drugs establishes a robust guideline for antibiotic screening to maintain the integrity of milk quality.