Longhorn Vaccines and Diagnostics Honors World TB Day 2025, Underscoring a Commitment to Eradicating Tuberculosis with PrimeStore® MTM

Testing for tuberculosis with PrimeStore® MTM tuberculosis enhances accuracy, safety and patient treatment monitoring compared to traditional diagnostic methods

BETHESDA, Md. & GAITHERSBURG, Md.--(BUSINESS WIRE)--Longhorn Vaccines and Diagnostics, a One Health company developing vaccines and diagnostic tools for global public health and zoonosis concerns, today honors World Tuberculosis (TB) Day 2025 by reaffirming its commitment to ending TB globally through PrimeStore® MTM, the only FDA-cleared sample collection and transport device. PrimeStore enables safer, more accurate, and cost-effective TB sample collection and transport, thereby expanding access to high-quality sample collection methods, ensuring laboratory accuracy, and driving earlier TB detection, better treatment outcomes, and stronger global disease control efforts.

“Even in 2025, TB remains a global health crisis with approximately 10 million new cases annually, and drug-resistant TB rates continuing to rise,” said Longhorn Vaccines and Diagnostics President Jeff Fischer. “Despite significant advancements in diagnostics, delivering on accurate detection and treatment monitoring remains a challenge. PrimeStore helps solve these issues by offering a superior, biohazard-free sample collection solution compatible with all major molecular testing platforms including GeneXpert MTB/RIF Ultra. This presents a unique opportunity for governments, NGOs, and healthcare providers to adopt safer, more efficient diagnostic solutions that modernizes TB detection and treatment strategies.”

Benefits of PrimeStore include:

• FDA-cleared and trusted for accuracy – PrimeStore is the only FDA-cleared sample transport medium for TB diagnostics, ensuring accurate results for screening, drug susceptibility testing, and treatment monitoring. PrimeStore is included in PrimeEQA, one of the most effective external quality assessment panels available that ensures laboratories are consistently delivering and reporting accurate TB test results on a global scale.
• A breakthrough in expedited treatment monitoring – PrimeStore is validated as a method to quickly determine whether TB treatment is effective in individual patients. This assessment tool is transforming TB patient management by allowing clinicians to adjust treatments in real time to improve outcomes.
• Non-invasive and scalable for all populations – PrimeStore is ideal for pediatric patients and individuals unable to produce sputum because it enables stool and oral swab-based testing for TB, thereby expanding diagnostic access in hard-to-reach and high-burden areas.
• Superior in sample preservation for reliable results – PrimeStore inactivates Mycobacterium tuberculosis and stabilizes DNA/RNA at ambient temperatures, which removes the need for cold-chain transport and minimizes contamination risks for laboratory personnel.
• Cost-effective – Reduces operational costs associated with sample collection and transport and laboratory workflows to provide a scalable and sustainable solution for global TB programs.
• Made in the USA by a veteran-owned business – PrimeStore® MTM is manufactured in the United States by a veteran-owned business to ensure high-quality production standards while supporting American innovation in global health solutions.

For more information about applications of PrimeStore and PrimeEQA for TB diagnostics and treatment monitoring, visit www.LHNVD.com.

About Longhorn Vaccines and Diagnostics

Longhorn Vaccines and Diagnostics is a closely held One Health company based in Maryland that is developing broad coverage vaccines and diagnostic tools for worldwide public health concerns such as anti-microbial resistance, sepsis and to prevent future pandemics. Since its inception in 2006, Longhorn has focused on developing broad coverage vaccines and diagnostic tools that can impact a pandemic on a global scale and at all socio-economic levels. Since pandemics flow between humans and animals, Longhorn products play a significant role to surveil, diagnose, prevent and treat the next infectious disease.

Longhorn’s core product, PrimeStore® Molecular Transport Medium (MTM), is a patented, FDA cleared, state-of-the-art ambient temperature molecular diagnostic collection and transport device that can help governments, global health organizations, and drug manufacturers improve the diagnosis and treatment of highly infectious diseases such as Influenza, SARS-CoV-2, and Mycobacterium tuberculosis (TB). Unlike standard devices for collecting and transporting virus samples, PrimeStore® MTM is the first molecular transport device that can safely deactivate pathogens and stabilize RNA and DNA, allowing enhanced point of care and ambient temperature transport for laboratory based molecular testing and characterization.