What class of antibiotic is specifically screened for in milk using FDA/NCIMS-approved tests?

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Multiple Choice

What class of antibiotic is specifically screened for in milk using FDA/NCIMS-approved tests?

Explanation:
Milk safety relies on screening for antibiotic residues with FDA/NCIMS-approved tests, designed to catch any contamination before it reaches consumers. The class most specifically screened is beta-lactams, including penicillins and cephalosporins, because these drugs are widely used in dairy cattle and can appear in milk if withdrawal times aren’t followed. The screening methods detect the growth-inhibition effects caused by beta-lactams, giving a quick, broad signal that an antibiotic residue may be present. If a screen is positive, confirmatory testing identifies the exact antibiotic and its level. Other antibiotic classes exist, but the FDA/NCIMS approved milk screening programs target beta-lactams as the primary concern due to their prevalence and reliable detection in routine tests.

Milk safety relies on screening for antibiotic residues with FDA/NCIMS-approved tests, designed to catch any contamination before it reaches consumers. The class most specifically screened is beta-lactams, including penicillins and cephalosporins, because these drugs are widely used in dairy cattle and can appear in milk if withdrawal times aren’t followed. The screening methods detect the growth-inhibition effects caused by beta-lactams, giving a quick, broad signal that an antibiotic residue may be present. If a screen is positive, confirmatory testing identifies the exact antibiotic and its level. Other antibiotic classes exist, but the FDA/NCIMS approved milk screening programs target beta-lactams as the primary concern due to their prevalence and reliable detection in routine tests.

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