Anti- Gemtuzumab (Anti-Idiotype) Antibody

Recombinant Monoclonal Antibody
Catalog # Availability Size / Price Qty
Detection of Gemtuzumab by Western Blot.
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Anti- Gemtuzumab (Anti-Idiotype) Antibody Summary

Detects Gemtuzumab in Western blots and direct ELISAs. No cross-reactivity with Cetuximab, Ibritumomab, Rituximab, Adalimumab, Tositumomab, Brentuximab, Trastuzumab, Solanezumab, Teprotumumab, and Aducanumab is observed.
Recombinant Monoclonal Rabbit IgG Clone # 2263B
Protein A or G purified from hybridoma culture supernatant
Full length Gemtuzumab
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.5 µg/mL
See below
Detects Gemtuzumab in direct ELISAs.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Gemtuzumab antibody by Western Blot. View Larger

Detection of Gemtuzumab by Western Blot. Western blot shows Centuximab, Rituximab, Brentuximab, and Gemtuzumab biosimilars. PVDF membrane was probed with 0.5 µg/mL of Anti- Gemtuzumab (Anti-Idiotype) Monoclonal Antibody (Catalog # MAB9617) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for Gemtuzumab at approximately 240 kDa (as indicated). This experiment was conducted under non-reducing conditions and using Immunoblot Buffer Group 1.

Specificity of Anti-Gemtuzumab (Anti-Idiotype) Antibody in ELISA Capture Assay. Biotinylated biosimilars were serially diluted and incubated with Anti-Gemtuzumab (Anti-Idiotype) Antibody (Catalog # MAB9617, green line) coated at 1 μg/mL on a 96-well polystyrene plate. No cross-reactivity with Rituximab (black line) or biotinylated IgG control (orange line) was observed.

Specificity of Anti-Gemtuzumab (Anti-Idiotype) Antibody in Direct ELISA. A panel of biosimilars was coated at 1 μg/mL in 96-well polystyrene plates. Anti-Gemtuzumab (Anti-Idiotype) Antibody (Catalog # MAB9617, 333 ng/mL) detected Gemtuzumab. No cross-reactivity with Cetuximab, Ibritumomab, Rituximab, Adalimumab, Tositumomab, Brentuximab, Trastuzumab, Solanezumab, Teprotumumab, and Aducanumab was observed.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Gemtuzumab

The anti-Gemtuzumab antibody is an anti-Idiotype antibody raised against and selected for the antigenic determinants of the variable region of Gemtuzumab. The antibody has been tested against a broad range of other biosimilars to ensure specificity. This highly specialized anti-idiotypic antibody can be used in a variety of pharmacokinetic (PK) assay formats.

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  1. What is an anti-idiotype antibody?

    • An anti-idiotype antibody is specific for the unique variable (antigen binding) region of another antibody.  We have anti-idiotype antibodies to commecially available therapeutic antibodies or  biosimilars.

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Anti- Gemtuzumab (Anti-Idiotype) Antibody
By Anonymous on 06/07/2022
Application: ELISA Sample Tested: EDTA Plasma Species: Human