FAQs

Select anti-idiotype antibodies for PK and ADA bioanalytical assays. Learn blocking vs non-blocking anti-ID, bridging ELISA setup, and how research biosimilars reduce assay development costs.

Learn how to titrate antibodies for flow cytometry, WB, IHC, and ELISA. Calculate Staining Index, find optimal concentration, and avoid common titration mistakes.

Learn why endotoxin (LPS) contamination matters for in vivo antibody experiments. Covers acceptable EU/mg levels, in vivo grade vs research grade, and endotoxin removal methods.

Choose the right blocking reagent for your assay. Compare BSA, milk, normal serum, casein, and protein-free blockers for WB, IHC, IF, and ELISA with troubleshooting tips.

Select the right WB loading control by molecular weight: beta-Actin, GAPDH, Vinculin, Lamin B1, Histone H3. Avoid overlapping bands with this MW-based selection guide.

Learn how to select non-competing capture and detection antibody pairs for sandwich ELISA. Covers epitope matching rules, coating optimization, checkerboard titration, and troubleshooting.

Compare RIPA, NP-40, urea, and specialized lysis buffers for WB, IP, ELISA, and phosphoproteomics. Includes recipes, tissue-specific tips, and troubleshooting guide.

Complete ChIP protocol with step-by-step instructions for X-ChIP and N-ChIP. Includes sonication optimization, antibody selection criteria, and troubleshooting common problems.

Troubleshoot common Co-IP problems: weak signal, high background bands, and failed reverse IPs. Includes optimized protocol, Protein A vs G selection guide, and antibody tips.

A practical guide to isotype controls in flow cytometry. Covers what isotype controls measure, how they differ from FMO controls, when they are appropriate, common misuses, and recommendations for proper gating strategies in multicolor flow cytometry panels.