Safety Alert for Magnetic Silica (MagSIL) used in NucliSENS easyMAG nucleic acid extraction system

According to Department of Health, this safety alert involved a device in Hong Kong that was produced by Biomérieux.

What is this?

Alerts provide important information and recommendations about products. Even though an alert has been issued, it does not necessarily mean a product is considered to be unsafe. Safety Alerts, addressed to health workers and users, may include recalls. They can be written by manufacturers, but also by health officials.

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  • Type of Event
    Safety alert
  • Date
  • Event Date Posted
  • Event Country
  • Event Source
  • Event Source URL
  • Notes / Alerts
    Hong Kong data is current through September 2018. All of the data comes from the Department of Health (Hong Kong), except for the categories Manufacturer Parent Company and Product Classification.
    The Parent Company and the Product Classification were added by ICIJ.
    The parent company information is based on 2017 public records. The device classification information comes from FDA’s Product Classification by Review Panel, based on matches of data from the U.S. and Hong Kong.
  • Extra notes in the data
    Medical Device Safety Alert
  • Reason
    Medical device safety alert: biomérieux magnetic silica (magsil) used in nuclisens easymag nucleic acid extraction system medical device manufacturer, biomérieux, has issued a medical device safety alert concerning its magnetic silica (magsil) (reference number: 280133) used in nuclisens easymag nucleic acid extraction system. the lot numbers affected by this issue are described below. lot numbers (expiration date): z0i7bb1ms (28/02/2017), z017bf1ms (28/02/2017), z017ca1ms (28/03/2017), z017be1ms (28/02/2017), z017cc1ms (28/03/2017), z017cd1ms (28/03/2017), z017ch1ms (28/03/2017), z017bd1ms (28/02/2017), z017db1ms (28/04/2017), z017ba1ms (28/02/2017), z017cf1ms (28/03/2017), z017ce1ms (28/03/2017), z017cg1ms (28/03/2017), z017da1ms (28/04/2017) , z017dc1ms (28/04/2017), z017dd1ms (28/04/2017), z017ea1ms (28/05/2017), z017eb1ms (28/05/2017), z017fb1ms (28/06/2017), z017fa1ms (28/06/2017), z017kc1ms (28/09/2017), z017kf1ms (28/09/2017), z017kg1ms (28/09/2017), z017kh1ms (28/09/2017), z017la1ms (28/10/2017) ]. following customer complaints about amplification performance issues with home brew pcr and rt-pcr assays, the manufacturer’s investigation has observed a decrease of extraction performances for some specific downstream applications due to the specific batches of magnetic silica (magsil). the investigation demonstrated no or not significant impact on performances when using nuclisens easymag extraction reagents with the biomerieux ivd downstream applications (pcr/rt-pcr argene) and nuclisens easyq hiv1 v2.0 (nasba technology). the investigation concluded that downstream applications were only impacted when the extraction volume was higher than 400µl and for double stranded nucleic acids target. double stranded nucleic acid applications with small (<40kbp) and medium genome sizes (<to 1200 kbp) i.E dna viruses are more impacted than higher human genomic dna and bacterial applications (>to l200kbp). single stranded rna virus applications are not impacted unless the rna is extracted without a matrix (i.E. in water). according to the manufacturer, the decrease of downstream application performances can lead to a risk of false negative, invalid or under-quantification results. however, this risk can be managed by following good laboratory practice with the use of appropriate controls (ic with same nature/structure than the target and/or external controls) that should detect the issue, especially false negative or under-quantification results. product recall and replacement is on-going. the customers are advised to take the following actions: reduce the sample input volume to 200µl until the silica problem is solved. use an extraction internal control which mimic the target (with same nature/structure), and/or external controls as recommended in the ifu and in good laboratory practice to detect any extraction performance issue. discuss any concern regarding previously reported results with the laboratory medical director to determine the appropriate course of action. according to the local supplier, the affected products are distributed in hong kong. if you are in possession of the affected products, please contact your supplier for necessary actions. posted on 18 july 2016.


  • Model / Serial
  • Product Classification
  • Product Description
    Medical Device Safety Alert: Biomérieux Magnetic Silica (MagSIL) used in NucliSENS easyMAG nucleic acid extraction system
  • Manufacturer