Nanosphere, Inc.: The Verigene Clostridium difficile Nucleic Acid Test (CDF) is a qualitative, multiplexed in vitro diagnostic test for the rapid detection of toxin A (tcdA), toxin B (tcdB), and tcdC gene sequences of toxigenic strains Clostridium difficile and for presumptive identification of PCR ribotype 027 strains from unformed (liquid or soft) stool specimens collected from patients suspected of having C. difficile infection (CDI). Presumptive identification of the PCR ribotype 027 strain of C. difficile is by detection of the binary toxin (cdt) gene sequence and the single base pair deletion at nucleotide 117 in the tcdC gene. The tcdC gene encodes for a negative regulator in C. difficile toxin production. The test is performed on the Verigene System and utilizes automated specimen preparation and polymerase chain reaction (PCR) amplification, combined with a nanoparticle-based array hybridization assay to detect the toxin gene sequences associated with toxin-producing C. difficile.

Recall number

Z-2682-2014

Recalling firm

Nanosphere, Inc.

Product

The Verigene Clostridium difficile Nucleic Acid Test (CDF) is a qualitative, multiplexed in vitro diagnostic test for the rapid detection of toxin A (tcdA), toxin B (tcdB), and tcdC gene sequences of toxigenic strains Clostridium difficile and for presumptive identification of PCR ribotype 027 strains from unformed (liquid or soft) stool specimens collected from patients suspected of having C. difficile infection (CDI). Presumptive identification of the PCR ribotype 027 strain of C. difficile is by detection of the binary toxin (cdt) gene sequence and the single base pair deletion at nucleotide 117 in the tcdC gene. The tcdC gene encodes for a negative regulator in C. difficile toxin production. The test is performed on the Verigene System and utilizes automated specimen preparation and polymerase chain reaction (PCR) amplification, combined with a nanoparticle-based array hybridization assay to detect the toxin gene sequences associated with toxin-producing C. difficile.

Status

Terminated

Initiated

2013-10-10

Posted

2014-09-23

Terminated

2015-06-16

Reason

Nanosphere has received several reports relating to an increased rate of Processing Errors during procedures performed on the Processor SP caused by Tips in Tip Holder Assemblies for the following products and lots of Extraction Trays.

Root cause

Nonconforming Material/Component

Action

Nanosphere sent a Field Notification Letter dated October 10, 2013, to all affected customers. The letter identified the product, the problem and the action to be taken by the customer. Instructions were included in the letter for customers to determine whether or not the extraction tray lots should be returned. If the extraction tray lots are to be returned, customers were to complete and return the attached form and replacement tip holder assemblies will be supplied at no cost. Customers could then dispose of the recalled unused tip holder assemblies. Customers with questions were instructed to contact their Nanosphere technical support representative. For questions regarding this recall call 1-888-837-4436, ext 3.

Quantity

80 units

Distribution

Worldwide Distribution - USA including AZ, CA, FL, GA, IA, IL, IN, KY, MA, MD, MN, MO, MT, NC, NE, NJ, NY, OH, OR, PA, TX, UT, VA, WA, WI, OH and Internationally to Bulgaria, Germany, Italy, Japan, South Korea, and Spain.

Lot, serial or model codes

Product Number: 20-009-022; Lot Number and Expiration Date: Lot: 100313022B, Expiration Date: 04/01/14

510(k) numbers

["K123197"]

PMA numbers

not on file

Product code

OZN

Firm FEI

3006028115

Firm city

Northbrook

Firm state

IL

Firm country

not on file

Cite as

FDA Medical Device Recalls (openFDA) (U.S. Food and Drug Administration (openFDA)), device-recall-0001-of-0001.json.zip, sha256 b87518bfe2e8, published 2026-09-28

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