What is the tetracycline colloidal gold rapid detection card?

Tetracycline Colloidal Gold Rapid Detection Card is a rapid detection product specially designed for the field of food safety, mainly used for qualitative or semi-quantitative detection of tetracycline antibiotic residues in food. Its core principle is based on colloidal gold immunochromatography technology: using the colloidal gold-labeled tetracycline antibody as a probe, when the sample (such as meat homogenate, dairy extract, etc.) is dropped into the detection card and the sample hole, it will move along the test strip. If there is tetracycline residue in the sample, it will bind with the colloidal gold-labeled antibody to form a complex; when the composite logistics passes through the detection line (coated with tetracycline antigen), specific binding of the antigen-antibody will occur, and a color-developing band will be formed at the position of the detection line; at the same time, the quality control line (coated with colloidal gold antibody) will always develop color as a valid reference for detection. By observing the color development of the strip, it can quickly determine whether the sample contains tetracycline residue.

In practical applications, this type of detection card is widely used for rapid screening of food substrates such as meat (such as pork, beef, chicken), dairy products (milk, milk powder), aquatic products (fish, shrimp), etc. Its advantage is that it is easy to operate, does not require professional equipment, and generally can produce results in 3-10 minutes; the detection cost is relatively low, suitable for grass-roots supervision, enterprise self-inspection and other scenarios; and the sensitivity is high, it can detect tetracycline residues at the ppb level, effectively avoiding high-risk foods from entering the market.

It is worth noting that this detection card is mainly used for preliminary screening. If the result is positive, it needs to be further confirmed by HPLC, mass spectrometry and other instruments. With the increase of food safety supervision, tetracycline colloidal gold rapid detection card is becoming one of the important tools to ensure food quality and safety, and plays a key role in rapid investigation, source control and other links.