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U.S. Army Testing RFID for Medical Biodefense Management

The military's medical research lab has been applying RFID labels to biological samples for vaccine, drug and infectious disease management research, to ensure that the samples can be identified in freezers without being removed from cold storage.
By Claire Swedberg
May 24, 2019

When some of the most sensitive biological samples are stored in laboratories, even removing them from freezers for a minute could increase their temperature. That means the manual process of inventory counting could pose a risk to the samples themselves. Therefore, the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) has spent the last two years testing an RFID-based solution that may enable it to count its highly sensitive samples without removing them from freezers. The agency is presently testing UHF RFID tags and readers at its lab in Fort Detrick, Md.

USAMRIID (pronounced "you-SAM-rid") conducts research on developing medical countermeasures against biological threats aimed at U.S. troops. It employs military and civilian scientists and collaborates with the Centers for Disease Control and Prevention, the World Health Organization, and multiple biomedical and academic institutes around the world. Part of the work being conducted at the Biosafety Level 3 and Level 4 laboratories involves the development of medical solutions, such as vaccines and drugs, as well as research on Biological Select Agents and Toxins (BSAT) samples.

Md Mizanur Rahman scans RFID-tagged samples in a wrapped cryo-box at USAMRIID. (Photo: John W. Braun, Jr., USAMRIID)
The lab tracks all BSAT in storage by performing physical inventory counts. "We have to be 100 percent accountable for those samples," says Md Mizanur Rahman, a microbiologist in USAMRIID's Select Agent Management Division, who leads the RFID research team. Rahman presented the lab's testing experiences at last month's RFID Journal LIVE! conference (see Enhancing Security of Concealed Biological Specimens With RFID), held in Phoenix, Ariz.

Inventory management has traditionally meant that individuals inspect and document samples one at a time, typically removing them from cold storage to visually confirm each sample's identity and then returning it to the freezer. Such manual counting is time-consuming and error-prone, while also posing a risk to the samples' integrity.

In general, these materials must be stored at temperatures of -80 degrees Celsius (-112 degrees Fahrenheit) or colder. "When they are removed from the freezers, the samples can get degraded as soon as the temperature starts to rise," Rahman explains. So in addition to accountability, he says, the lab strives to maintain the integrity of the biological sample as well.

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