RIDASCREEN® Sulfonamide

Art. No.: R3004

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Product info

RIDASCREEN® Sulfonamide

Art. No.: R3004

Intended use

RIDASCREEN® Sulfonamide is a competitive enzyme immunoassay for the quantitative analysis of sulfonamides in egg, meat (chicken and pork), fish, shrimp, honey and milk.

General Information

Sulfonamides are widely used as feed additives, mainly for fattening of calves and pigs. Combined with inhibitors of dihydrofolate reductase such as trimethoprim, tetroxoprim, or pyrimethamine sulfonamides are also used in veterinary medicine for the treatment of intestinal infections, mastitis, pulmonitis and other (systemic) diseases. Therefore sulfonamide residues may occur in food of animal origin such as meat and milk and were found frequently abroad. According to the EU-Law a maximum residue limit for all substances of the sulfonamide group of 100 µg/kg (ppb) in muscle, fat, liver and kidney and of 100 µg/l in milk is valid.



  • Reliable: ss screening test.
  • Sensitive: the detection limit is 1.5 μg/kg (ppb) in meat (chicken) and egg/ 2 μg/kg in meat (pork), fish, shrimps and honey/ 3.5 μg/kg in milk.
  • Rapid: assay results within 1 h and 15 min.
Dear customers,

we have started to provide the documents for our products in an electronic format. These are the Instructions for Use (IFU), the Safety Data Sheets (SDS) and the Certificate of Analysis (CoA). For batches placed on the market after 01 January 2024, you can find our documents on the eIFU portal eifu.r-biopharm.com.

Art. NoR3004
Test formatMicrotiter plate with 96 wells (12 strips with 8 wells each).
Sample preparationMilk: after dilution direct use in the assay.

Meat (chicken and pork), egg, fish, shrimp: homogenization, extraction, centrifugation, evaporation and degreasing.

Honey: extraction, RIDA® C18 column purification and dilution.
Incubation time1 h 15 min
LOD (Detection Limit)Meat (chicken), egg 1.5 μg/kg (ppb), meat (pork), fish, shrimp, honey 2 μg/kg, milk 3.5 μg/l
Validated matrices

Milk, meat (bovine, porcine), meat (poultry), honey, liver, kidney, fish, shrimp and egg.

Detected analyte

Sulfonamides in milk, meat, honey, liver, kidney, fish, shrimp and egg.

EvaluationMicrotiter plate spectrophotometer (450 nm)