• Assay Type

  Solid Phase Sandwich ELISA

• Format

  96-well strip plate

• Range

  7.81 - 500 pg/mL

• Sufficient Materials

  For five 96-well plates*

• Specificity

  Please see the

* Provided that the recommended microplates, buffers, diluents, substrates and solutions are used, and the assay is run as summarized in the Assay Procedure provided.

Ancillary Reagent Kit Available  

DY008, DuoSet ELISA Ancillary Reagent Kit 2 -

This DuoSet ELISA Development kit contains the basic components required for the development of sandwich ELISAs to measure natural and recombinant human Chorionic Gonadotropin Beta Chain (CG β). The suggested diluent is suitable for the analysis of most cell culture supernate, serum, and plasma samples. Diluents for complex matrices, such as serum and plasma, should be evaluated prior to use in this DuoSet.

Product Features

• Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time

• Development protocols are provided to guide further assay optimization

• Assay can be customized to your specific needs

• Economical alternative to complete kits

Kit Content

• Capture Antibody

• Detection Antibody

• Recombinant Standard

• Streptavidin conjugated to horseradish-peroxidase (Streptavidin-HRP)

Other Reagents Required

DuoSet Ancillary Reagent Kit 2 (5 plates): (Catalog # ) containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and Reagent Diluent Concentrate 2.

The components listed above may be purchased separately:

PBS: (Catalog # ), or 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na₂HPO₄, 1.5 mM KH₂PO₄, pH 7.2 - 7.4, 0.2 µm filtered

Wash Buffer: (Catalog # ), or 0.05% Tween^® 20 in PBS, pH 7.2-7.4

Reagent Diluent: (Catalog # ), or 1% BSA in PBS, pH 7.2-7.4, 0.2 µm filtered

Substrate Solution: 1:1 mixture of Color Reagent A (H₂O₂) and Color Reagent B (Tetramethylbenzidine) (Catalog # )

Stop Solution: 2 N H₂SO₄ (Catalog # )

Microplates: R&D Systems (Catalog # )

Plate Sealers: ELISA Plate Sealers (Catalog # )

Preparation and Storage

• Storage

  Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: Chorionic Gonadotropin beta Chain (HCG beta)

HCG is a glycoprotein hormone secreted in pregnancy by embryonic trophoblast cells during the first 7 weeks of gestation. Production subsequently shifts to the placenta, where it continues until term. HCG is a heterodimer consisting of an alpha chain and a beta chain. The alpha chain is common to several other hormones, including lutenizing hormone (LH), follicle stimulating hormone (FSH), and thyroid stimulating hormone (TSH), while the beta chain is unique to HCG. Both alpha and beta chains contain a cysteine knot motif, also found in growth factors such as TGF-beta family members.

• Entrez Gene IDs:

  1082 (Human);

• Aliases:

  CGB; CGB3; CGB3choriogonadotropin subunit beta; CGB5; CGB7; CGB8; CG-Beta; Choriogonadotropin Subunit Beta; Chorionic gonadotrophin chain beta; chorionic gonadotropin beta 3 subunit; Chorionic Gonadotropin beta Chain; chorionic gonadotropin beta subunit; chorionic gonadotropin, beta polypeptide; hCGB