< 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
No significant interference observed with available related molecules.
The Quantikine HS Human GM-CSF Immunoassay is a 6.5 hour solid phase ELISA designed to measure human GM-CSF in serum, plasma, and urine. It contains E. coli-expressed recombinant human GM-CSF and antibodies raised against the recombinant factor. It has been shown to accurately quantitate the recombinant factor. Results obtained using natural GM-CSF showed linear curves that were parallel to the standard curves obtained using the Quantikine HS kit standards. These results indicate that this kit can be used to determine relative mass values for natural human GM-CSF.
Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in separate assays to assess inter-assay precision.
Serum, EDTA Plasma, Heparin Plasma
The recovery of GM-CSF spiked to three different levels throughout the range of the assay in various matrices was evaluated.
Average % Recovery
EDTA Plasma (n=4)
Heparin Plasma (n=4)
To assess the linearity of the assay, samples were spiked with high concentrations of GM-CSF in various matrices and diluted with the appropriate Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Preparation and Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
GM-CSF (Granulocyte-Macrophage Colony Stimulating Factor) induces the development of monocytes, neutrophils, eosinophils, and myeloid and dermal dendritic cells. It also acts as a neutrophil and dendritic cell chemoattractant. GM-CSF promotes Th1 and Th17 cell mediated autoimmune inflammation as well as the inflammatory activation of dendritic cells, microglia, alveolar macrophages, and eosinophils. In addition, it cooperates with G-CSF in promoting tumor cell proliferation and invasion. GM-CSF signals through a receptor complex composed of GM-CSF R alpha and the Common beta Chain (beta c) with Syndecan-2 as a potential co-receptor. The beta c subunit is shared by the receptor complexes for IL-3 and IL-5.
Refer to the product for complete assay procedure.
Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
Prepare all reagents, standard dilutions, and samples as directed in the product insert.
Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.
For Serum & Plasma Samples: Add 100 µL of Assay Diluent to each well. For Urine Samples: Add 50 µL of Assay Diluent to each well.
Standard, Control, or Sample
For Serum & Plasma Samples: Add 150 µL of Standard, control, or sample to each well. For Urine Samples: Add 200 µL of Standard, control, or sample to each well.
Cover with a plate sealer, and incubate at room temperature for 3 hours.
Aspirate each well and wash, repeating the process 5 times for a total of 6 washes.
200 µL Conjugate
Add 200 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours.
Aspirate and wash 6 times.
50 µL Substrate Solution
Add 50 µL Substrate Solution to each well. Cover with a new plate sealer, and incubate at room temperature for 1 hour. Do not wash the plate.
50 µL Amplifier Solution
Add 50 µL Amplifier Solution to each well. Cover with a new plate sealer, and incubate at room temperature for 30 minutes.
50 µL Stop Solution
Add 50 µL of Stop Solution to each well. Read at 490 nm within 30 minutes. Set wavelength correction to 650 nm or 690 nm.
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.