What is the Sulfonamide Colloidal Gold Rapid Detection Card?

With the increasing attention paid to food safety, various drug residues have become the focus of public attention. Among them, sulfonamides are widely used as common antibiotics in livestock and poultry breeding to prevent diseases. However, if their residues in meat, eggs, dairy products and other foods exceed the standard, they may cause harm to human health, such as causing allergic reactions, damaging liver and kidney functions, etc. Therefore, it is essential to quickly and accurately detect sulfonamide drug residues in food, and the sulfonamide drug colloidal gold rapid detection card is a practical tool to meet this demand.

Sulfonamide drug colloidal gold rapid detection card is a rapid detection product based on colloidal gold immunochromatography technology. The core principle is to use the specific binding reaction of antigens and antibodies: the detection card contains colloidal gold-labeled sulfonamide antibodies. When the sample (such as food extract) is dropped into the detection card and added to the sample hole, it will move along the nitrocellulose membrane. If there are sulfonamide residues in the sample, they will bind to the colloidal gold-labeled antibodies, preventing the antibodies from binding to the sulfonamide-carrier protein on the detection line (T-line), resulting in no color development of the T-line; conversely, if there is no residue in the sample, the antibody will bind to the T-line, causing the T-line to develop color. By observing the color development of the T-line and the quality control line (C-line), it is possible to quickly determine whether the sample contains sulfonamide residues. The entire detection process usually only takes 10-15 minutes, without the need for complex instruments and professional operations.

Compared with traditional detection methods, the sulfonamide colloidal gold rapid detection card has significant advantages: First, the detection speed is fast, saying goodbye to the long wait of hours or even days for traditional high-performance liquid chromatography and other methods, and it can realize on-site rapid screening; Second, it is easy to operate and does not require professional training. Ordinary staff only need to add samples and observe the results according to the instructions; Third, it has high sensitivity and can detect sulfonamide drug residues as low as ng level, meeting the requirements of food safety standards; Fourth, it is portable and small in size. It can be carried with you to the field, market, laboratory and other scenes, suitable for rapid law enforcement inspections and enterprise self-inspection.

At present, the sulfonamide drug colloidal gold rapid detection card is widely used in food, breeding and other fields. In food production enterprises, it can be used for raw material acceptance, processing process monitoring and rapid screening of finished products before leaving the factory, and timely detection of problem products with excessive sulfonamide residues; in market supervision departments, it can be used as an on-site rapid detection tool to sample meat, poultry eggs, aquatic products and other foods to quickly lock in hidden risks; in the breeding process, it can help farmers to timely understand whether the livestock and poultry withdrawal period is up to standard and avoid drug residue problems.

In short, the sulfonamide drug colloid gold rapid detection card has become an important tool in the field of food safety testing with its fast, sensitive and convenient characteristics, providing strong support for guarding the public's "safety on the tip of the tongue".