CD Ceftiofur Rapid Test is a competitive immunoassay for the semi-quantitative detection of the presence of Ceftiofur residue in milk.
Ceftiofur is an antibiotic of the cephalosporin type (third generation), licensed for use in veterinary medicine. It was first described in 1987. It is marketed by pharmaceutical company Pfizer as Excenel. It is resistant to the antibiotic resistance enzyme beta-lactamase, and has activity against Gram-positive and Gram-negative bacteria. E. coli strains resistant to ceftiofur have been reported.
Principle Of The Test
CD Ceftiofur Rapid Test is based on competitive lateral flow immunochromatographic assay. The Ceftiofur conjugate in the test zone will capture the immuno-gold (colloid gold- Ceftiofur antibody conjugate), when there is very little dissociative Ceftiofur in the samples. A visible red test band indicates a negative result when the control line (C zone) shows that the card is valid. The test band (T zone) will be not visible if Ceftiofur is present in concentration of 50 ppb and above which explains a positive result.