High-volume enzyme immunoassay test system for sulfamethazine in swine

Area of Science:

• Veterinary diagnostics
• Food safety testing
• Analytical chemistry

Background:

• Sulfamethazine is a common veterinary drug.
• Monitoring drug residues in food animals is crucial for public health.
• Existing screening methods can be time-consuming for high-volume testing.

Purpose of the Study:

• To develop and validate a high-throughput enzyme immunoassay (EIA) for sulfamethazine detection in swine.
• To assess the system's performance and efficiency for slaughterhouse screening.

Main Methods:

• Development of a robotic sample processor for automated liquid handling.
• Implementation of an enzyme immunoassay (EIA) for sulfamethazine quantification.
• Validation against thin-layer chromatography (TLC) for correlation analysis.

Main Results:

• The developed EIA system demonstrated good correlation with TLC (r = 0.826).
• Inter- and intra-assay coefficients of variation were below 10%, indicating good precision.
• The system can analyze approximately 2,400 samples per 8-hour workday.

Conclusions:

• The high-volume EIA system is effective for rapid screening of sulfamethazine in swine.
• The automated system provides reliable and efficient drug residue analysis for food safety.
• This method is suitable for large-scale, routine testing in slaughterhouse environments.