Erin R. Borger
Chief Executive Officer (CEO)
ExThera Medical Corporation
757 Arnold Drive, Suite B
Martinez , CA 94553
United States
(b)(4)@extheramedical.comIssued Feb 6, 2026Center for Devices and Radiological Health
Source: FDA, published letter. FDA published this warning letter; View Letter opens FDA's copy.
Violations6
Issue DateFeb 6, 2026
Product TypeMedical Devices
StatusOpen
Letter Details
Firm
ExThera Medical Corporation
Location
Erin R. Borger
Chief Executive Officer (CEO)
ExThera Medical Corporation
757 Arnold Drive, Suite B
Martinez , CA 94553
United States
(b)(4)@extheramedical.com
FEI Number
N/A
Country
United States
Issue Date
February 06, 2026
Issuing Office
Center for Devices and Radiological Health
Product Type
Medical Devices
Status
Open
Summary
ExThera Medical Corporation was cited for objectionable conditions observed during a Bioresearch Monitoring Program inspection of two investigational device studies involving the Seraph 100 Microbind Affinity Blood Filter and Onco-Seraph 100 blood filter devices, which are used to remove pathogens and circulating tumor cells from patient blood. The inspection, conducted from May 27 to June 4, 2025, evaluated whether the company's activities and procedures as a clinical study sponsor complied with federal regulations governing significant risk investigational device exemption studies. The FDA requested prompt corrective action to address violations identified during the inspection, with the company having submitted written responses on June 25, July 25, and September 15, 2025.
ExThera Medical Corporation FDA Warning Letter, February 6, 2026