Improving Molecular Diagnostics Beginning with the Sample

PrimeStore MTM™, (Molecular Transport Medium) is an industry-changing product.  

Newest Journal Article (08/16): Improving the Sensitivity of the Xpert® MTB/RIF assay in low copy samples  

Newest Poster (10/16): A Novel Bead-Based Extraction Method for Improved qPCR and Next-Generation Sequencing of Mycobacterium tuberculosis from Low-Target Samples 

Newest Patent (11/16):Compositions and methods for detecting and identifying nucleic acid sequences in biological samples 

Sample collection and transport of quality nucleic acid is one of the most challenging components of molecular testing and Next-generation sequencing.  Significant time, money and effort are required to get a quality sample to a testing facility. Longhorn has solved the problem with its molecular transport media. 

The collection system, PrimeStore MTM™, inactivates microbes including Mycobacterium tuberculosis and every virus ever tested from clinical and environmental specimens and prevents nucleic acid degradation during shipping and storage. DNA/RNA is preserved at ambient temperature without refrigeration or freezing and is therefore suitable for all aspects of sample collection to include surveillance and tracking of infectious pathogens in the developing world. 


PrimeStore MTM for Mycobacterium tuberculosis (Data Published May 2016) (Data published April 2015) (Data published July 2015) 

Widely used tests such as the Cepheid GeneXpert MTB/RIF assay can be more sensitive when the sample is collected in PrimeStore MTM™.

Sample collection for whole blood (Viral Load Testing, bacterial load testing), viral respiratory samplesbacterial respiratory samples, and tissues in a single product.

Published studies supported by a variety of organizations to include the Bill and Melinda Gates Foundation, the Centers for Disease Control (US), National Institutes of Health (US), PEPFAR, and USAID, have demonstrated PrimeStore MTM’s capabilities for collecting, transporting, and storage for molecular testing of a variety of sample types.

Prime Suite of Products

Rapid and safe identification can be accomplished with Longhorn's Prime Suite. This is a molecular diagnostic system, which allows infectious agents to be safely collected, transported and accurately identified (to include asymptomatic patients) within a couple of hours versus days for traditional cultures.  It also allows for both high throughput centralized laboratory testing, and testing in mobile labs without containment capability.

The pathogen specific detection system, PrimeMix®, is an all inclusive, one step PCR reagent mix for point of collection detection. It is temperature stable, requires no mixing, can be loaded on PCR plates and pre-staged at ambient temperatures for high through testing.  It can also be field deployed.

Current PrimeMix® Assays:

Low Resource Country pricing is available for all products.