Profile: Norgen Biotek Corp. provides sample preparation kits for RNA, DNA, and protein purification for research purposes. These kits include the kits for isolation & purification of total RNA and microRNA from various samples, as well as novel multi-analyte kits that allow for the sequential isolation of RNA, DNA & proteins from the same sample using a single column with no sample splitting. We also offer a full line of PCR reagents, buffers, molecular weight ladders and plastics/filtration devices. The urine sample preparation products provide fast, robust, reliable and simple procedures for preserving, concentrating, isolating and purifying macromolecules including cell-free total proteins, DNA, RNA & microRNA, as well as exfoliated cells and microorganisms from less than 1 mL up to 50 mL of urine. The sensitivity and speed of these kits make them very useful and powerful tools for isolating analytes from urine for applications not only in biomarker discovery and diagnosis but also in the monitoring of renal and other diseases. Our urine collection & preservation tubes are very convenient and useful for preserving cell-free macromolecules as well as exfoliated cells & microorganisms during shipping of urine at ambient temperatures.