# FDA recall Z-2952-2020

> **LONGHORN VACCINES AND DIAGNOSTIC** · Class II · device recall initiated 2020-06-03.

## Product

PrimeStore Molecular Transport Medium (PS-MTM), Model Numbers LH-1-2, LH-1-3, LH-1-4, LH-1-5, LH-1-5CC, LH-1-15CC - Product Usage: intended for stabilization, transportation, and inactivation of infectious unprocessed nasal washes, nasopharyngeal, oral/throat swabs* suspected of containing Influenza A virus RNA. PS-MTM is also intended for the stabilization, transportation, and inactivation of infectious unprocessed sputum samples suspected of containing Mycobacterium tuberculosis (MTB) DNA from human samples.

## Reason for recall

The tubes may have been delivered to some users without labels. Users may not be able to identify the tubes without these labels. If samples stored or transported in tubes are tested on certain systems or come into contact with bleach they can produce cyanide gas. The solution in these tubes contains guanidine thiocynate and may put laboratory personnel at risk of exposure to cyanide gas when it comes into contact with bleach or reagents containing bleach.

## Distribution

Nationwide distribution including in the state of MD.

## Key facts

- **Recall number:** Z-2952-2020
- **Recalling firm:** LONGHORN VACCINES AND DIAGNOSTIC
- **Classification:** Class II
- **Product type:** device
- **Status:** Ongoing
- **Initiation date:** 2020-06-03
- **Report date:** 2020-09-23

- **Voluntary/Mandated:** Voluntary: Firm initiated
- **Location:** Bethesda, MD, United States

## Primary source

FDA Enforcement Reports: https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=Z-2952-2020

## Citation

> AI Analytics. FDA recall Z-2952-2020. Retrieved 2026-06-12 from https://api.ai-analytics.org/recall/Z-2952-2020. Source: US FDA. Licensed CC0.

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