• Assay Type

  Solid Phase Sandwich ELISA

• Format

  96-well strip plate

• Sample Type & Volume Required

  100 µL

• Range

  31.20 - 2,000 pg/mL

• Sufficient Materials

  For fifteen 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  

DY009, DuoSet ELISA Ancillary Reagent Kit 3 -

This DuoSet ELISA Development kit contains the basic components required for the development of sandwich ELISAs to measure natural and recombinant human IGF-I. The suggested diluent is suitable for the analysis of most cell culture supernate 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 3 (5 plates): (Catalog # ) containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and Reagent Diluent Concentrate 3.

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 5% Tween 20 in PBS, 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: IGF-I

Insulin-like growth factor (IGF)-I (also known as somatomedin C and somatomedin A) and IGF-II (multiplication stimulating activity or MSA) belong to the family of insulin-like growth factors that are structurally homologous to proinsulin. Mature IGF-I and IGF-II share approximately 70% sequence identity. Both IGF-I and IGF-II are expressed in many tissues and cell types and may have autocrine, paracrine and endocrine functions. Mature IGF-I and IGF-II are highly conserved between the human, bovine and porcine proteins (100% identity), and exhibit cross-species activity.

The IGFL (insulin-like growth factor-like) family includes four small (~11 kDa), probably secreted family members in humans and one in mouse. This family shares A and B chain cysteine motifs with the IGF superfamily, and has an additional cysteine motif within an uncleaved region corresponding to the C peptide of the IGF family.

• Entrez Gene IDs:

  3479 (Human); 16000 (Mouse); 24482 (Rat);

• Long Name:

  Insulin-like Growth Factor I

• Aliases:

  IBP1; IGF1; IGF-1; IGF1A; IGFI; IGF-I; IGF-IA; IGF-IB; insulin-like growth factor 1 (somatomedin C); insulin-like growth factor 1; insulin-like growth factor I; insulin-like growth factor IA; insulin-like growth factor IB; Mechano growth factor; MGF; Somatomedin A; Somatomedin C; somatomedin-C