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Competitive ELISA Kit
In competitive enzyme immunoassays (EIA) the antigen in a sample competes for limited antibody binding sites with antigen conjugated to a reporter enzyme. This produces an inverse relationship between antigen concentration and substrate turnover. Competitive EIAs typically use a single antibody to a small molecular weight antigen, generally less than 10,000 Daltons. During incubation, samples with high antigen content result in unlabeled antigen being bound in greater amounts than conjugated antigen. When chromogenic substrate is added to the assay to develop color, samples with high antigen concentration generate a lower signal than those containing low antigen concentration, yielding the inverse correlation between antigen concentration in the sample and color development in the assay. This relationship can then be used to extrapolate antigen concentration in an unknown sample from a standard curve. This type of reaction is one of the few methods possible for small molecular weight antigens, such as steroids, drugs, lipids and peptides.

  • CAT. #
  • PRODUCT NAME
  • SAMPIE
  • PRICE
Cat.#: EIA-213C Product Name: Ractopamine ELISA Kit
Sample: feed, urine and Tissue Species:
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Cat.#: EIA-217C Product Name: Progesterone ELISA Kit
Sample: serum and plasma Species:
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Cat.#: EIA-228C Product Name: Penicillin ELISA Kit
Sample: Milk and Shrimps Species:
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Cat.#: EIA-236C Product Name: Nitroimidazoles ELISA Kit
Sample: honey Species:
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Cat.#: EIA-237C Product Name: Nitrofurantoin, AHD ELISA Kit
Sample: feed, fish, shrimp, meat (beef, chicken and pork), eggs, honey, milk, serum and urine Species:
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Cat.#: EIA-238C Product Name: Nitrofurans SEM ELISA Kit
Sample: tissue and honey Species:
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Cat.#: EIA-240C Product Name: Neomycin ELISA Kit
Sample: chicken Species:
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Cat.#: EIA-523C Product Name: Human Hepatitis B Surface Antigen, HBsAg ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-531C Product Name: Human Free T4 ELISA Kit
Sample: human serum Species:
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Cat.#: EIA-532C Product Name: Human Free T3 ELISA Kit
Sample: human serum Species:
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Cat.#: EIA-548C Product Name: Human E Antigen of Hepatitis B Virus, HBeAg ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-026FS Product Name: Avermectins ELISA Kit
Sample: Tissue, Vegetable Species:
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Cat.#: EIA-027FS Product Name: Colistin & polymyxin ELISA Kit
Sample: Tissue, Milk, Viccine, Cell Culture Species:
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Cat.#: EIA-028FS Product Name: Neomycin ELISA Kit
Sample: Chicken Species:
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Cat.#: EIA-029FS Product Name: Sarafloxacin ELISA Kit
Sample: Aquatic Product Species:
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Cat.#: EIA-030FS Product Name: Nitroimidazoles ELISA Kit
Sample: Honey Species:
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Cat.#: EIA-031FS Product Name: Tetracyclines ELISA Kit
Sample: Milk, Tissue, Honey, Ice Cream Species:
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Cat.#: EIA-032FS Product Name: Gentamicin ELISA Kit
Sample: Vaccine Species:
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Cat.#: EIA-034FS Product Name: Nitrofurans ELISA Kit
Sample: Tissue & Honey Species:
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Cat.#: EIA-035FS Product Name: Medroxyprogesterone ELISA Kit
Sample: Tissue Species:
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Cat.#: EIA-036FS Product Name: Aflatoxin B1 ELISA Kit
Sample: Feed, Oil Species:
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Cat.#: EIA-037FS Product Name: Chlorpromazine ELISA Kit
Sample: Tissue, Feed Species:
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Cat.#: EIA-038FS Product Name: Diazepam ELISA Kit
Sample: Tissue, Feed, Urine Species:
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Cat.#: EIA-039FS Product Name: Aflatoxin ELISA Kit
Sample: Species:
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Cat.#: EIA-040FS Product Name: Zearalenone ELISA Kit
Sample: Species:
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Cat.#: EIA-041FS Product Name: Deoxynivalenol ELISA Kit
Sample: Species:
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Cat.#: EIA-042FS Product Name: Malachite Green ELISA Kit
Sample: Fish, Water, Shrimp Species:
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Cat.#: EIA-343C Product Name: Melamine ELISA Kit
Sample: milk, milk powder, infant formula, meat, fish, feed, chocolate and other food samples Species:
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Cat.#: EIA-344C Product Name: Melamine ELISA Kit
Sample: milk, milk powder, infant formula, meat, fish, feed, chocolate and other food samples Species:
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Cat.#: EIA-600C Product Name: Human Anti-Toxoplasma Gondii IgM Antibody, Anti-TOXO IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-345C Product Name: Melamine ELISA Kit
Sample: milk, milk powder, infant formula, meat, fish, feed, chocolate and other food samples Species:
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Cat.#: EIA-601C Product Name: Human Anti-Toxoplasma Gondii IgG Antibody, Anti-TOXO IgG ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-346C Product Name: Medroxyprogesterone ELISA Kit
Sample: tissue Species:
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Cat.#: EIA-602C Product Name: Human Anti-Rubella IgM Antibody, Anti-RV IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-603C Product Name: Human Anti-Rubella IgG Antibody, Anti-RV IgG ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-604C Product Name: Human Anti-Hepatitis C Virus Antibody, Anti-HCV ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-605C Product Name: Human anti-Hepatitis B Surface Antibody, anti-HBsAb ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-606C Product Name: Human Anti-Hepatitis A Virus IgM Antibody, Anti-HAV IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-607C Product Name: Human Anti-Hepatitis A Virus IgG Antibody, Anti-HAV IgG ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-352C Product Name: Malachite Green ELISA Kit
Sample: fish/shrimp and water Species:
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Cat.#: EIA-608C Product Name: Human Anti-E Antigen of Hepatitis B Virus Antibody, Anti-HBeAb ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-609C Product Name: Human Anti-Cytomegalovirus IgM Antibody, Anti-CMV IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-610C Product Name: Human Anti-Cytomegalovirus IgG Antibody, Anti-CMV IgG ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-611C Product Name: Human anti-Core Antigen of Hepatitis B Virus IgM Antibody, anti-HBc IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-100C Product Name: Zearalenone, ZEA ELISA Kit
Sample: cereals, dried meat/fish, feed, milk and seed Species:
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Cat.#: EIA-612C Product Name: Human Anti-Core Antigen of Hepatitis B Virus Antibody, Anti-HBcAb ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-365C Product Name: IgM Antibody to Human Enterovirus 71, EV71 IgM ELISA Kit
Sample: human or animal serum or plasma Species:
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Cat.#: EIA-366C Product Name: IgM Antibody to Hepatitis E Virus, HEV-IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-367C Product Name: IgM Antibody to Hepatitis D Virus, HDV-IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-368C Product Name: IgM Antibody to Hepatitis C Virus, HCV-IgM ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-369C Product Name: IgM Antibody to Hepatitis A Virus, HAV-IgM ELISA Kit
Sample: human serum or plasma samples Species:
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Cat.#: EIA-114C Product Name: Vitamin B12 ELISA Kit
Sample: food Species:
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Cat.#: EIA-375C Product Name: IgG Antibody to M. Tuberculosis, TB-IgG ELISA Kit
Sample: human or animal serum or plasma Species:
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Cat.#: EIA-376C Product Name: IgG Antibody to Hepatitis E Virus, HEV-IgG ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-377C Product Name: IgG Antibody to Hepatitis D Virus, HDV-IgG ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-378C Product Name: IgG Antibody to Hepatitis A Virus, HAV-IgG ELISA Kit
Sample: human serum or plasma samples Species:
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Cat.#: EIA-124C Product Name: Trimethoprim ELISA Kit
Sample: honey Species:
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Cat.#: EIA-127C Product Name: Treponema pallidum ELISA Kit
Sample: human serum Species:
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Cat.#: EIA-132C Product Name: Total Antibody to Hepatitis G Virus, HGV-Ab ELISA Kit
Sample: human or animal serum or plasma Species:
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Cat.#: EIA-133C Product Name: Total Antibody to Hepatitis E Virus, HEV-Ab ELISA Kit
Sample: human or animal serum or plasma Species:
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Cat.#: EIA-134C Product Name: Tilmicosin ELISA Kit
Sample: muscle, liver, honey, egg and milk. Species:
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Cat.#: EIA-135C Product Name: Tiamulin ELISA Kit
Sample: chicken and pork Species:
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Cat.#: EIA-136C Product Name: Tetracyclines ELISA Kit
Sample: animal tissue, milk, ice cream and honey Species:
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Cat.#: EIA-139C Product Name: Testosterone ELISA Kit
Sample: serum and plasma Species:
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Cat.#: EIA-651C Product Name: Hepatitis D Virus Antigen, HDV-Ag ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-652C Product Name: Hepatitis B Virus Nucleic Acid Related Antigen, HBV-NRAg ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-153C Product Name: Sulfonamide ELISA Kit
Sample: fish, shrimp, honey, kidney, liver, meat (beef, chicken and pork), milk, milk powder, serum, urine and water Species:
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Cat.#: EIA-154C Product Name: Sulfaquinoxaline, SQX ELISA Kit
Sample: tissue, honey, serum, urine, milk Species:
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Cat.#: EIA-155C Product Name: Sulfadimethoxine ELISA Kit
Sample: tissue, egg, honey, serum, urine, milk Species:
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Cat.#: EIA-411C Product Name: Human Testosterone ELISA Kit
Sample: human serum Species:
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Cat.#: EIA-156C Product Name: Streptomycin ELISA Kit
Sample: feed, honey, kidney, liver, meat (beef, chicken and pork), milk, serum and urine Species:
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Cat.#: EIA-412C Product Name: Human T4 ELISA Kit
Sample: human serum Species:
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Cat.#: EIA-413C Product Name: Human T3 ELISA Kit
Sample: human serum Species:
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Cat.#: EIA-160C Product Name: Sarafloxacin ELISA Kit
Sample: aquatic product Species:
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Cat.#: EIA-161C Product Name: Salbutamol ELISA Kit
Sample: feed, urine and Tissue (pork、pork liver) Species:
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Cat.#: EIA-673C Product Name: Gentamicin ELISA Kit
Sample: in egg, feed, honey, meat/liver/kidney, milk, serum and urine Species:
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Cat.#: EIA-674C Product Name: Gentamicin ELISA Kit
Sample: vaccine Species:
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Cat.#: EIA-675C Product Name: Furazolidone, AOZ ELISA Kit
Sample: feed, fish, shrimp, meat (beef, chicken and pork), eggs, honey, milk, serum and urine Species:
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Cat.#: EIA-676C Product Name: Furaltadone, AMOZ ELISA Kit
Sample: feed, fish, shrimp, meat (beef, chicken and pork), eggs, honey, milk, serum and urine Species:
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Cat.#: EIA-677C Product Name: Fumonisin ELISA Kit
Sample: Maize and Grain Products Species:
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Cat.#: EIA-678C Product Name: Folic Acid ELISA Kit
Sample: food Species:
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Cat.#: EIA-679C Product Name: Fluoroquinolone ELISA Kit
Sample: feed, meat, milk, tissue, serum and urine. Species:
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Cat.#: EIA-681C Product Name: Florfenicol ELISA Kit
Sample: tissue and feed Species:
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Cat.#: EIA-683C Product Name: Estradiol ELISA Kit
Sample: serum and plasma Species:
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Cat.#: EIA-684C Product Name: Enrofloxacin ELISA Kit
Sample: feed, urine, fish, shrimp, meat, liver, kidney, milk and serum Species:
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Cat.#: EIA-435C Product Name: Human Oestradiol ELISA Kit
Sample: human serum or plasma Species:
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Cat.#: EIA-437C Product Name: Human NPPB ELISA Kit
Sample: BIOLOGICAL FLUIDS Species:
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Cat.#: EIA-707C Product Name: Diazepam ELISA Kit
Sample: tissue, feed and urine Species:
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