Get started with our free trial size antibodies!

New to CUSABIO?
Try a Free Antibody Sample — No Risk

10,000+ trial-ready antibodies

20 μg FREE

100% Performance Guarantee

Why Try a Free Antibody Sample?

Applications – Validated for multiple applications, including ELISA, WB, IHC, IF, FC, IP, Co-IP, and ChIP.

Confidence – Backed by our 100% performance guarantee. If it doesn’t perform as expected, we'll make it right.

High-Value – Test specificity and sensitivity in your own workflow with a free 20 µg sample — before scaling up. Additional trial samples are available for $49.90 each.

Get Your Free Trial Antibody in 3 Steps

How to request a trial size antibody?

Download Catalog

Click here to download the trial size catalog (Find your antibody and copy the product code.)

Submit Request:

Click here to fill out the application form

Confirm & Ship

We'll email you a confirmation. We'll ship your sample right away.

By submitting this form, you agree to receive communications about your trial request. Limit one free sample per person. Additional samples are available for $49.90 each (20 µg).

Why choose CUSABIO antibodies?

A Wide Range of Products

CUSABIO offers tens of thousands of high-quality antibodies, including 67,000+ polyclonal antibodies, 1000+ monoclonal antibodies, 1000+ recombinant monoclonal antibodies and 150+ antibody pairs.

Rigorous Validation

Every antibody is validated across 8 application platforms (ELISA, WB, IHC, IF, FC, IP, Co-IP, ChIP) – just like our catalog products.

Our 100% Performance Guarantee

If an antibody doesn’t perform as expected, our technical team will troubleshoot, replace, or refund.

Strict Production Process

We design, produce, and validate all 67,000+ antibodies in-house – ensuring reliable supply, batch-to-batch consistency, and fast delivery.

Apply for 20ug trial size antibodies

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New to CUSABIO? Try a Free Antibody Sample — No Risk

Why Try a Free Antibody Sample?

Get Your Free Trial Antibody in 3 Steps

Important Notes

Why choose CUSABIO antibodies?

New to CUSABIO?
Try a Free Antibody Sample — No Risk