Antibodies for Research and Diagnostics

High-purity in vivo ready and custom antibody manufacturing to support basic research, preclinical development, and diagnostic assays. Every lot is produced under cGMP and our ISO 9001:2015 and ISO 13485:2016 certified quality system, and catalog products are backed by the Leinco Product Guarantee.

Custom size options, quality and value are why we continue to use Leinco over all others in the life science research industry.”

– Robert D. Schreiber, PhD. at Washington University in St. Louis

Core Antibody Portfolio

In vivo Functional Grade Antibodies

Formulated specifically for animal models, these antibodies are produced with extremely low endotoxin levels and are free of preservatives and carrier proteins. They are optimized for in vivo activation, neutralization, and receptor blocking. We offer distinct purity tiers, including GOLD™ and PLATINUM™ grades, to meet specific experimental thresholds. Bulk manufacturing scales are available for large cohort studies.

Primary Monoclonal
Antibodies

Our primary antibodies are validated across standard laboratory applications, including flow cytometry, ELISA, western blotting, and immunohistochemistry. The catalog targets cytokines, CD markers, immune checkpoints, and infectious disease antigens, supporting workflows in immunology, oncology, and neuroscience.

Secondary
Antibodies

Engineered for target detection and signal amplification, our secondary antibodies are available unconjugated or conjugated to standard fluorophores, biotin, and enzymes (HRP/AP). We provide formulations raised in multiple host species, accommodating complex multiplexing protocols and diverse assay requirements.

Polyclonal
Antibodies

Our polyclonal antibodies provide high-sensitivity, multi-epitope recognition for robust antigen detection. Raised in standard host species such as rabbit and goat, these formulations effectively capture low-abundance targets and accommodate minor variations in antigen conformation.

Research-Grade
Biosimilars

We manufacture research grade non-therapeutic recombinant antibodies featuring sequences identical to approved therapeutic biologics. These are utilized as reference standards and controls in drug discovery, pharmacokinetic studies, and anti-idiotypic assay development.

Isotype
Controls

Accurate data requires establishing a proper baseline. Our isotype controls match the host species and immunoglobulin subclass of your primary antibody, allowing you to accurately measure and subtract non-specific background binding caused by Fc receptors or other off-target interactions.

Shop by Application

Navigate to our dedicated application pages to find validated antibodies, supporting reagents, and technical resources tailored to your specific workflow.

Microscopy

Perform spatially resolved biomarker analysis and immunofluorescence using DNA-barcoded antibodies for the Akoya PhenoCycler-Fusion system, CF® Dye conjugates, and other validated imaging reagents.

Immunoassays

Develop and optimize quantitative diagnostic platforms utilizing high-affinity matched antibody pairs, proprietary ImmunoMetrix™ formulations, and specialized assay buffers.

Flow Cytometry

Immunophenotype cellular subsets using our diverse selection of directly conjugated monoclonal antibodies, apoptosis kits, and specialized buffers.

ELISA

Detect and quantify specific protein targets with high-affinity monoclonal and polyclonal antibodies validated for capture, detection, and indirect assay formats.

Immunohistochemistry

Visualize proteins within tissue architecture utilizing specific antibodies validated for fresh frozen and formalin-fixed paraffin-embedded samples.

Immunoprecipitation

Isolate individual proteins or co-immunoprecipitate protein complexes utilizing highly specific antibodies optimized for target capture.

Functional Studies

Research protein activity using preservative-free, low-endotoxin antibodies validated for in vitro and in vivo neutralization, blocking, activation, and depletion across standard protocols and complex 3D organoid models.

Western Blotting

Identify size-separated target proteins utilizing our extensive catalog of highly specific primary antibodies and conjugated detection reagents.

Shop by Reactivity

Filter our antibody catalog by reactive species to locate reagents for your specific assays.

Application Data & Technical Resources

Access validated protocols, product selection guides, and application-specific performance data to support experimental design