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Get tips on using NucleoSpin® RNA Blood to perform RNA isolation / purification Tissue - Human Blood / Serum / Plasma / Buffy coat

Get tips on using ARCTURUS® PicoPure® DNA Extraction Kit to perform DNA isolation / purification Tissue - murine tail biopsies

Get tips on using VWR Life Science RiboZol™ RNA Extraction Reagent to perform RNA isolation / purification Tissue - Human Gallbladder

Get tips on using DNA Isolation Kit for Cells and Tissues to perform DNA isolation / purification Cells - Primary cells Human primary keratinocytes

Get tips on using FragEL™ DNA Fragmentation Detection Kit, Colorimetric - TdT Enzyme to perform TUNEL assay cell type - 3T3 L1 mouse adipose tissue

Get tips on using OxiSelect™ In Vitro ROS/RNS Assay Kit (Green Fluorescence) to perform ROS assay cell type - mouse dorsal skin tissue

Get tips on using AllPrep DNA/RNA Micro Kit to perform RNA isolation / purification Tissue - Human Blood / Serum / Plasma / Buffy coat

Get tips on using miRNeasy Serum/Plasma Advanced Kit (50) to perform RNA isolation / purification Tissue - Livestock Blood / Serum / Plasma / Buffy coat

The most widely used method for protein quantification is by spectrophotometry. The concentration of the protein in the samples is measured at an absorbance of 280 nm. The absorbance of the sample protein is then plotted against a standard curve. This method allows for total protein quantification in a sample (cell and tissue extracts). Before analysing the concentration of protein in the sample, it is important to choose the right test method.  For high protein concentration samples (above 5 - 160 mg/ml) the best method is to use the Biuret test. For low concentrations samples (between 1 - 2000µg/ml) the best methods are Lowry assay, BCA assay, Bradford assay and coomassie blue (for exact sensitivity of the test kits you use, refer to manufacturer's protocol). If the samples contain detergents like Triton X-100 then BCA assay is the best choice. For samples that have proteins larger than 3 KDa in size Bradford assay is the best choice. Each method has advantages and disadvantages, plan your analysis considering your sample characteristics.

The most widely used method for protein quantification is by spectrophotometry. The concentration of the protein in the samples is measured at an absorbance of 280 nm. The absorbance of the sample protein is then plotted against a standard curve. This method allows for total protein quantification in a sample (cell and tissue extracts). Before analysing the concentration of protein in the sample, it is important to choose the right test method.  For high protein concentration samples (above 5 - 160 mg/ml) the best method is to use the Biuret test. For low concentrations samples (between 1 - 2000µg/ml) the best methods are Lowry assay, BCA assay, Bradford assay and coomassie blue (for exact sensitivity of the test kits you use, refer to manufacturer's protocol). If the samples contain detergents like Triton X-100 then BCA assay is the best choice. For samples that have proteins larger than 3 KDa in size Bradford assay is the best choice. Each method has advantages and disadvantages, plan your analysis considering your sample characteristics.