R&D Systems® ELISAs are the most trusted,
most published ELISAs on the market
with a menu of 700 target analytes
spanning 12 species.


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Why people love to use R&D Systems ELISAs

Our ELISAs perform as expected every time because of our extensive assay development expertise.


Our master calibrated Quantikine® assays ensure that our kits perform consistently over time. Results obtained today are comparable to results obtained last month or even last year.

Confidence with

Our Assays have controls with assigned ranges, guaranteeing performance.


Our DuoSet® and DuoSet Intracellular (IC) ELISA Development Systems provide the best signal-to-noise ratio for value conscious customers.



R&D Systems ELISA kits are available in a range of formats including colorimetric, fluorescence, and chemiluminescence-based kits for measuring intracellular and extracellular proteins.

Quantikine® Colorimetric Sandwich ELISAs

Quantikine ELISA Kits – a wide selection of quantitative ELISAs for measuring molecules in biological fluids.

Quantikine HS® Colorimetric Sandwich ELISAs, High Sensitivity

Quantikine HS ELISA kits - greater sensitivity for samples containing very low levels of target molecule

Quantikine® QuicKit™ Colorimetric Sandwich ELISAs

Quantikine QuicKit ELISA Kits – quantitative results in 90 minutes

Quantikine IVD® Colorimetric ELISAs, for In Vitro Diagnostic Use

Quantikine IVD ELISA Kits – 510(k) cleared for in vitro diagnostic use

QuantiGlo® Chemiluminescent Sandwich ELISAs

QuantiGlo® ELISA Kits with broad dynamic range

Parameter™ Colorimetric Competitive ELISAs

Parameter Kits – competitive assays for cyclic nucleotides, eicosanoids, and more

Ella™ Automated ELISA Platform and Simple Plex™ Assays

Meet Ella, your immunoassay problem solver. Her Simple Plex™ assays are fully automated, multi-analyte immunoassays. And, the coolest part? They’re powered by antibodies from R&D Systems.

Simple Plex™ Assays Menu on ProteinSimple.com

Simple Plex™ assays run on Ella - they're like mini, automated ELISAs. Ella’s multi-sample, ready to go cartridges let you run up to 4 immunoassays per sample, all at once. On top of that, Ella just uses 25 μL of sample! Setup only takes 5 minutes, and she'll have your data ready in 60 minutes. Hands-free.

ELISA Development Reagents

DuoSet® ELISA Development Kits contain matched antibody pairs and the basic components required to develop an immunoassay. They offer an economical alternative to buying separate antibodies and proteins.

DuoSet® ELISA Development Systems

A format for sandwich ELISA development

DuoSet® IC (Intracellular) ELISA Development Systems

A format for measuring intracellular molecules in cell lysates by sandwich ELISA

DuoSet® IC (Intracellular) Phospho-specific ELISA Development Systems

A format for measuring phosphorylated intracellular molecules in cell lysates by sandwich ELISA

Supplemental ELISA/Assay Products

Microplates, wash buffers, diluents, detection reagents, stop solution, sample collection kits, and more

ELISAs for Unique Model Organisms

From mammals and amphibians to bacteria and viruses, R&D Systems offers ELISAs that support research in a variety of important model organisms.

R&D Systems ELISAs

Quality Manufacturing and Evaluation of ELISA Performance