Research-grade recombinant biosimilar antibodies and receptor-trap proteins that reproduce the binding specificity of reference biologic drugs — for use as binding reagents, functional blocking tools, and PK/ADA assay controls. For Research Use Only.
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Target: LAG3 | Primary Antibody | Western Blot |
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Target: Mesothelin | Primary Antibody | Western Blot |
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Target: NGF | Primary Antibody | Western Blot |
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Target: PD-1 | Primary Antibody | Western Blot |
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Target: PD-1 | Primary Antibody | Western Blot |
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Target: LAG3 | Primary Antibody | Western Blot |
From $82.00
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Target: LOX-1 | Primary Antibody | Western Blot |
From $82.00
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Target: LAG3 | Primary Antibody | Western Blot |
From $82.00
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Target: OX40 | Primary Antibody | Western Blot |
From $82.00
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Target: LAG3 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: PCSK9 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: LAG3 | Primary Antibody | Western Blot |
From $82.00
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Target: PCSK9 | Primary Antibody | Western Blot |
From $82.00
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Target: MAPT | Primary Antibody | ELISA |
From $82.00
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Target: LIF | Primary Antibody | ELISA |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: LAG3 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: LAG3 | Primary Antibody | Western Blot |
From $82.00
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Target: MAPT | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
From $82.00
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Target: OX40 Ligand | Primary Antibody | Western Blot |
From $82.00
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Target: PCSK9 | Primary Antibody | Western Blot |
From $82.00
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Target: PD-1 | Primary Antibody | Western Blot |
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Target: LGR5 | Primary Antibody | Flow Cytometry |
From $82.00
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Target: LIGHT | Primary Antibody | ELISA, Flow Cytometry |
From $82.00
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Target: MET | Primary Antibody | ELISA, Flow Cytometry |
From $82.00
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Target: MUC1 | Primary Antibody | ELISA, Flow Cytometry |
From $82.00
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Target: MET | Primary Antibody | ELISA, Flow Cytometry |
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Target: LEPR | Primary Antibody | ELISA, Flow Cytometry |
From $82.00
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This collection brings together research-grade recombinant antibodies (and receptor-trap fusion proteins) that reproduce the antigen-binding specificity of clinically important reference biologics — anti-TNF, anti-VEGF, anti-PD-1/PD-L1, anti-HER2, anti-CD20 and many more. Each reagent binds the same target as its reference drug, so it can serve as a positive control, a functional blocking/neutralizing tool, a binding reagent, and a reference standard in pharmacokinetic (PK) and anti-drug-antibody (ADA) bioanalysis. All products are For Research Use Only (RUO) and are not the licensed therapeutic products.
A biosimilar research antibody is one of three reagents used to study or measure a biologic drug. They are complementary, not interchangeable — most immunogenicity and PK workflows use all three.
| Dimension | Biosimilar antibody (this collection) | Anti-idiotypic antibody | PK / ADA ELISA kit |
|---|---|---|---|
| What it is | Recombinant copy of the drug's variable region | Antibody raised against the drug's paratope/idiotype | Ready-to-run immunoassay |
| What it binds | The drug's antigen (e.g. TNF-α, PD-1, HER2) | The reference/biosimilar drug itself | The drug, or anti-drug antibodies, in a sample |
| Primary use | Positive control, blocking/neutralization, binding reagent | Capture or detect the drug; ADA bridging assays | Quantify drug level (PK) or immunogenicity (ADA) |
| Reads out | Binding & function (ELISA, SPR/BLI, flow, neutralization) | Drug concentration when paired in an assay | Concentration from a standard curve |
| Best for | Assay development, functional studies, controls | Building a custom PK or ADA assay | Routine sample quantification |
| Format | Purified protein (mAb, Fab, fusion or ADC) | Purified antibody | Microplate kit |
How to read this: Use the biosimilar antibody as your positive control and functional tool. To measure the drug in samples, pair it with an anti-idiotypic antibody to build a PK or ADA assay, or use a ready-made ELISA kit for routine quantification. If you are characterizing binding or blocking activity, start here; if you are quantifying drug or anti-drug-antibody levels, add the matching kit.
Adalimumab Biosimilar – Research Grade
anti-TNF-α
Trastuzumab Biosimilar – Research Grade
anti-HER2
Pembrolizumab Biosimilar – Research Grade
anti-PD-1
Rituximab Biosimilar – Research Grade
anti-CD20
Please use this form for bulk quantity requests or customized products.
