Human sCD14 Quantikine ELISA Kit

Human sCD14 Quantikine ELISA Kit
DC140 1 Kit $479
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Assay Type:Solid Phase Sandwich ELISA
Format:96-well strip plate
Assay Length:4.5 hours
Sample Type & Volume Required Per Well:Cell Culture Supernates (100 µL), Serum (10 µL), EDTA Plasma (10 µL), Heparin Plasma (10 µL), Citrate Plasma (10 µL)
Sensitivity:125 pg/mL
Assay Range:250 - 16,000 pg/mL (Serum, Heparin Plasma, Cell Culture Supernates, Citrate Plasma, EDTA Plasma)
Specificity:Natural and recombinant human sCD14
Cross-reactivity:< 0.5% cross-reactivity observed with available related molecules. < 50% cross-species reactivity observed with species tested.
Interference:No significant interference observed with available related molecules.
Product Summary:

The Quantikine Human soluble CD14 Immunoassay is a 4.5 hour solid phase ELISA designed to measure human soluble CD14 in cell culture supernates, serum, and plasma. It contains recombinant human CD14 expressed from CHO cells and antibodies raised against the recombinant factor. This immunoassay has been shown to accurately quantitate the recombinant factor. Results obtained measuring natural human sCD14 showed dose-response curves that were parallel to the standard curves obtained using the kit standards. These results indicate that this kit can be used to determine relative mass values for natural human sCD14.


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.

Cell Culture Supernates, Serum, EDTA Plasma, Heparin Plasma, Citrate Plasma
Intra-Assay Precision Inter-Assay Precision
Sample 1 2 3 1 2 3
n 20 20 20 40 40 40
Mean 1,111 2,158 4,187 1,159 2,298 4,346
Standard Deviation 71 104 216 86 153 209
CV% 6.4 4.8 5.2 7.4 6.7 4.8


The recovery of sCD14 spiked to three different levels throughout the range of the assay in various matrices was evaluated.

Sample Type Average % Recovery Range %
Serum (n=5) 98 84-107
Heparin Plasma (n=5) 96 91-104
Citrate Plasma (n=5) 102 88-110
EDTA Plasma (n=5) 98 90-107
Cell Culture Media (n=5) 91 85-105


To assess the linearity of the assay, five samples containing or spiked with high concentrations of sCD14 were diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.