Stool Nucleic Acid Collection and Preservation System
Complete, user-friendly system to collect, preserve and transport stool samples
Each clamshell contains nitrile gloves, alcohol swabs, Fe-Col® Collection Paper, and Norgen's Stool Nucleic Acid Collection and Preservation Tube containing Norgen's Stool Preservative
The preservative provides sample homogeneity eliminating sample variability
Preserve and transport DNA & RNA safely at ambient temperature
No cold shipping/storage needed - hassle-free and cost effective
Isolate nucleic acids for any application including 16s NGS
Robust preservation over a range of temperatures
Customizable with various accessories for easy and safe collection
Eliminates odor and renders samples safe and non-infectious
Norgen's Stool Nucleic Acid Collection and Preservation System is a complete system designed for collection, ambient storage and transport of nucleic acids from stool specimens. Each of the 50 clamshells contain: nitrile gloves, alcohol swabs, Fe-Col® Collection Paper, and Norgen's Stool Nucleic Acid Collection and Preservation Tube containing Norgen's Stool Preservative in a liquid format. The user simply collects the stool specimen using the provided Fe-Col® Collection Paper, and then transfers the stool into the Stool Nucleic Acid Collection and Preservation Tube using the spoon attached to the lid. The sample is then mixed gently until the stool is well submerged under the preservative. The Stool Preservative eliminates the need to immediately process or freeze samples and allows the samples to be shipped to centralized testing facilities at ambient temperatures. The components of the Stool Preservative allow samples to be stored at room temperature for over 2 years for DNA and up to 7 days for RNA. To extend the stool RNA stability in the preservative, storage at -20°C or -70°C is recommended upon arrival at the testing facilities until RNA purification. The Stool Preservative also prevents the growth of Gram-negative and Gram-positive bacteria and fungi, and inactivates viruses allowing the resulting non-infectious samples to be handled and shipped safely.
Figure 1. Norgen's Best-In-Class Preservation. Summary of community shifts in response to stabilizing solutions over a 14-day storage period. Bray-Curtis distance towards the reference for each patient grouped by stabilizing solution. Median and 5th-to-95th percentile ranges are shown for both interaliquot and interpatient variability (adapted from Plauzolles et al, 2022). Norgen is the most similar to frozen stool samples, over 11 other sample collection and storage methods.
Figure 2. Integrity of Total Stool DNA and RNA Isolated from Preserved Stool Samples. DNA and RNA were isolated from 200 µL of preserved stool from 4 different donors (lanes A to D) stored at room temperature at the indicated time points (DNA at 27 months and RNA at 7 days) using Norgen's Stool Nucleic Acid Isolation Kit (Cat# 45600). Next, 10 µL from the 75 µL eluted nucleic acid was loaded onto a gel for visual analysis. High integrity stool DNA was isolated from preserved stool samples that were stored at room temperature for 27 months, and high integrity RNA was isolated from stool samples stored for 7 days at ambient temperature. Lane M is Norgen's HighRanger 1 kb DNA Ladder (Cat. 11900).
Figure 3. Monitoring the DNA stability of Adenovirus (Ad5subE1) Spiked into Preserved Stool Samples using TaqMan Real-Time PCR Assay.Preserved stool samples were spiked with 6 x 109pf/mL of Adenovirus, and 200 µL samples were removed at the indicated time points. The stool DNA was then isolated using Norgen's Stool DNA Isolation Kit (Cat# 27600). Next, 2 µL of DNA template from each 50 µL of elution was used in a 20 µL PCR reaction to detect the Adenovirus DNA. The stool preservative was shown to stabilize Adenovirus DNA up to 21 weeks at ambient temperature, indicating that Norgen's Stool Nucleic Acid Collection and Preservation Tubes provide a safe and convenient sample transportation system
Figure 4. Hierarchical Clustering of Stool Samples at Phylum Level Under Different Storage Conditions.The microbial composition from the stool samples preserved in Norgens Stool Nucleic Acid Collection and Preservation Tubes (Cat. 45630, 45660) did not differ significantly to that of controls (fresh stool from Day 0 at RT) over a 2 day period while non-preserved stool samples showed a distance in the dendrogram from the original stool profile.
Figure 5. Difference In Top 5 Abundant Microorganisms at Phylum Level Compared to Fresh Stool (Day 0). Abundance of Firmicuties, Bacteroidetes and proteobacteria from the preserved stool sample was higher than non-preserved (NP) to the fresh stool after 2 days storage at RT, indicating that the originality of microorganism profile from the preserved are much closer to the fresh stool sample (Day 0).
Figure 6. Relative Abundance of Bacterial Genera Between Preserved And Non-preserved Stool Sample Stored at RT For 2 Days.Preserved stool sample using Norgens Stool Nucleic Acid Collection and Preservation Tubes (Cat. 45630, 45660) showed closed relativeness to the fresh stool sample (Day 0).
Figure 7.Correlation between duplicate bacterial metagenomic reads using (A) Fresh stool (day 0) and preserved stool at RT for 2 days and (B) Fresh stool (day 0) and non-preserved stool at RT for 2 days. A greater R2 was observed for Fresh stool (day 0) and preserved stool, suggestive of higher consistency between fresh stool sample and preserved stool sample