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Drug-KLH Conjugates
AAT Bioquest offers a comprehensive selection of Drug-KLH Conjugates designed for developing drug-specific antibodies used in ELISA-based detection assays. Keyhole Limpet Hemocyanin (KLH) is an excellent carrier protein due to its high molecular weight and strong immunogenicity, making it ideal for generating robust immune responses against small molecule haptens such as antibiotics, opioids, and other pharmaceutical compounds. These ready-to-use conjugates eliminate the complexity of custom conjugation chemistry, providing researchers with reliable immunogens for antibody production and immunoassay development.
Drug Category
Application Focus
Key Products
Antibiotics (Amphenicols)
Food safety testing, veterinary residue monitoring
Chloramphenicol-KLH, Florfenicol-KLH
Antibiotics (Fluoroquinolones)
Antibiotic residue screening
Ofloxacin-KLH, Danofloxacin-KLH, Cinoxacin-KLH
Antibiotics (Sulfonamides)
Multi-residue detection in animal products
Sulfadimidine-KLH, Sulfathiazol-KLH, Sulfacetamide-KLH
Nitrofuran Metabolites
Banned substance detection in food
AOZ-KLH, AHD-KLH, AMOZ-KLH, SEM-KLH
Opioids & Controlled Substances
Forensic toxicology, drug abuse testing
Fentanyl-KLH, Norfentanyl-KLH, Isotonitazene-KLH
Sedatives & Anesthetics
Veterinary drug monitoring, toxicology
Xylazine-KLH, Medetomidine-KLH, Diazepam-KLH
Hormones
Steroid hormone immunoassay development
Estradiol-KLH
KLH Carriers & Conjugation Tools
Custom conjugate preparation
ReadiLink™ KLH Kit, Maleimide-Activated mKLH
Antibiotic-KLH Conjugates

Antibiotic-KLH conjugates are essential immunogens for developing antibodies against antimicrobial drug residues in food, environmental, and clinical samples. These conjugates enable researchers to create sensitive ELISA-based screening assays for monitoring antibiotic contamination in meat, milk, eggs, and aquaculture products. AAT Bioquest provides conjugates covering multiple antibiotic classes including amphenicols, fluoroquinolones, and sulfonamides.
  • Pre-conjugated and ready-to-use for immunization protocols
  • High hapten density for strong immune response
  • ELISA-optimized for antibody development
  • Comprehensive antibiotic class coverage regulated in food safety testing
Nitrofuran Metabolite-KLH Conjugates

Nitrofuran metabolite-KLH conjugates are designed for developing antibodies against tissue-bound metabolites of banned nitrofuran antibiotics. Nitrofurans (furazolidone, furaltadone, nitrofurantoin, and nitrofurazone) are prohibited in food-producing animals due to potential carcinogenic and mutagenic properties. Since parent compounds degrade rapidly, detection relies on identifying their stable protein-bound metabolites: AOZ, AMOZ, AHD, and SEM.
  • Target stable tissue-bound metabolites not parent compounds
  • Regulatory compliance for EU, FDA, and China testing requirements
  • Competitive ELISA-enabled assay development
  • Complete metabolite marker coverage of all four major nitrofuran markers
Opioid & Controlled Substance-KLH Conjugates

Opioid and controlled substance-KLH conjugates support the development of antibodies for forensic toxicology, clinical drug monitoring, and drug abuse testing applications. These conjugates are particularly critical for addressing the ongoing opioid crisis, enabling sensitive detection of fentanyl, its metabolites, and emerging synthetic opioids in biological specimens.
  • Fentanyl derivatives and novel synthetic opioid coverage
  • Forensic and clinical toxicology assay development
  • Emerging threat detection including isotonitazene
  • Custom conjugation support with reactive fentanyl derivatives
Sedative & Anesthetic-KLH Conjugates

Sedative and anesthetic-KLH conjugates enable development of immunoassays for detecting veterinary sedatives and emerging adulterants in drug supply monitoring. Xylazine, in particular, has become a critical target due to its increasing prevalence as a fentanyl adulterant, while medetomidine and diazepam remain important for veterinary drug residue testing.
  • Xylazine detection for emerging drug adulterant surveillance
  • Veterinary drug residue monitoring program support
  • Rapid screening assay development capability
  • Optimized immune response for robust antibody generation
Hormone & Other Drug-KLH Conjugates

This category includes hormone conjugates and specialty drug-KLH products for various immunoassay applications, from steroid hormone detection to ionophore antibiotic monitoring in animal products. These conjugates provide researchers with targeted solutions for hormone-based and specialized pharmaceutical immunogens.
KLH Carrier Proteins & Conjugation Tools

AAT Bioquest provides high-quality KLH carrier proteins and conjugation kits for researchers who need to prepare custom drug-protein conjugates. These products offer flexibility for immunizing with haptens not available as pre-made conjugates, enabling researchers to develop immunogens for their specific applications.
  • ReadiLink™ KLH Conjugation Kit: Complete kit for rapid hapten-KLH conjugation without specialized expertise
  • Maleimide-activated carriers: Pre-activated for direct conjugation to thiol-containing haptens
  • Optimized immunization response: Enhanced hapten density and immunogenicity
  • Multiple format options: Both KLH and OVA carrier proteins available

This document (01.0255.251203r1) was last updated on Sat Feb 28 2026. All trademarks and registered trademarks mentioned herein are the property of their respective owners.