Assay Biotech

Assay Biotechnology was founded in 2006 in the San Francisco Bay Area. They have produced many high quality, high specificity polyclonal antibodies for the OEM markets for five years. Their inventory covers over 5,000 validated, pre-made antibodies spans a wide range of cellular pathways, including over 1,000 phospho-specific antibodies.

In addition to providing a vast inventory of fine research polyclonal antibodies, Assay Biotechnology is striving to produce an extensive range of human genome wide and regulatory phosphorylation site antibodies by 2015.

All of antibodies are purified by affinity-chromatography using epitope-specific immunogens. After passing ELISA assays, all antibodies undergo rigorous quality control utilizing multiple validation methods including Western blot (WB), immunohistochemistry (IHC), immunocytochemistry (ICC), or immunofluorescence (IF). Any antibodies must have at least two applications of WB, IHC, ICC/IF, and/or ELISA before being released. All of their antibodies are tested for Western blots with crude lysates from cells or tissues and not over expressed or pure proteins.


Product Overview 



2,000+ ELISA kits for phospho- and total proteins, transcription factors, cytokines, growth factors and their associated receptors: Traditional Sandwich ELISAs, High-Sensitivity ELISAs, One-Step ELISAs, Ultra-Sensitive ELISAs, Cell-Based ELISAs, DNA-Binding ELISAs.


150+ colori- and fluorometric assay kits for metabolic enzymes and metabolites: Carbohydrates, lipids, amino acids, metal ions, neurotransmitters and more.


10,000+ primary antibodies for WB, IHC, ICC, IF and ELISA: Phospho-specific, methyl-specific, acetyl-specific, cleaved-specific, non-phospho and total protein antibodies.

Antibody Range
  • Phospho-specific
  • Acetyl-specific
  • Cleaved-specific
  • Adhesion
  • Cancer/Apoptosis
  • Cell Cycle
  • Channel
  • Cytoskeletal
  • GPCR
  • Growth Factors
  • GTP-binding
  • Homeobox
  • Intermediates
  • Kinases/Phosphatases
  • Lymphocyte Signaling
  • Neuroscience
  • Receptors
  • Transcription
  • Translation
  • Transporters


700+ fluorescent dyes and quenchers for labeling, conjugation and fluorescent analysis: Thiol-reactive dyes, positively-charged rhodamine dyes, pH-dependent and independent dyes and fluorophores.


10,000+ recombinant proteins and synthesized peptides: Cancer and signaling proteins, CD antigens, cytokines and growth factors, membrane proteins and receptors, transcription factors, kinases, phosphatases, proteases, synthetases and more.