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![ELISA: Human sTfR (soluble Transferrin R) ELISA Kit (Colorimetric) [NBP3-18043] - Samples were spiked with high concentrations of Human sTfR (soluble Transferrin R) and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-18043_human-stfr-soluble-transferrin-r-elisa-kit-colorimetric-132202416133668.jpg "ELISA: Human sTfR (soluble Transferrin R) ELISA Kit (Colorimetric) [NBP3-18043] - Samples were spiked with high concentrations of Human sTfR (soluble Transferrin R) and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Human sTfR (soluble Transferrin R) ELISA Kit (Colorimetric) [NBP3-18043] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-18043_human-stfr-soluble-transferrin-r-elisa-kit-colorimetric-4320248595112.jpg)