Molecular collection devices | Longhorn Vaccines and Diagnostics












FDA: FAQs on Diagnostic Testing for SARS CoV-2


PrimeStore MTM validated for SARS-CoV-2 identification and NGS characterization

LHNVD is in close communication with the FEMA/HHS about supply capacity expansion.  We are working with buyers to optimize tube selection to match available swabs and to fit into existing automation systems. For specific questions email info@lhnvd.com.


PrimeStore MTM is not currently compatible with the Hologic Panther System due to a disinfecting step involving bleach that is specific to that platform. Bleach should be avoided for clean up for most molecular tests and nearly all extraction reagents contain guanidine.


Due to current Federal Restriction placed on Puritan Scientific, PrimeSwabs are not available, and we are not as a company sourcing other swabs.  While end users must make the final determination on swab type based on supply and functionality, LHNVD recommends a nasal flocked swab whenever possible.

PrimeXtract is comparable to Qiagen RNA mini kit with fewer steps 

Reduced Worldwide pricing during WHO Emergency

Contact LHNVD

For China sales please contact our partner Avantech a part of the Dian Diagnostics Group

PrimeStore MTM is the only media on the FDA preferred list that inactivates SARS-CoV-2 during the collection and transit stage.

(Data available on request)

New wide mouth tubes added to provide users more options

-5 mL tube with 1.5 mL fill

-15 mL tube with 2.0 mL fill

Quality molecular testing requires optimized components at every stage, beginning at sample collection.

Longhorn's diagnostic products are optimized for molecular testing starting at the sample collection site with a focus on minimizing the cold chain to ensure molecular diagnostics can be used throughout the world.

Warning:  Do not drink, inject or inhale PrimeStore MTM, or any other products that act as disinfectants, for the Prevention or Treatment of COVID-19!  PrimeStore MTM is for sample collection only!

Core Product: PrimeStore MTM

FDA Cleared: New Class II Predicate Device


USDA Foreign Animal Disease Diagnostic Laboratory (FADDL) validated

Other Products and Kits

Safe and accurate molecular testing across the healthcare and agriculture industries