FDA Medical Device Recalls (openFDA)
Roche Diagnostics Operations, Inc.: Cobas b 221 (versions 5 and 6) Blood Gas and Electrolytes Analyzer
- Recall number
- Z-1041-2015
- Recalling firm
- Roche Diagnostics Operations, Inc.
- Product
- Cobas b 221 (versions 5 and 6) Blood Gas and Electrolytes Analyzer
- Status
- Terminated
- Initiated
- 2014-12-18
- Posted
- 2015-02-02
- Terminated
- 2017-02-06
- Reason
- Chemical component of the F3 Fluid pack and environmental bacterial contamination causes a positive bias up to 39% at 4.1 mmol/l for the glucose measurement and 30% at 4.12 mmol/l for lactate. Urea readings are unaffected.
- Root cause
- Material/Component Contamination
- Action
- Roche Diagnostics has confirmed an issue with the calibration and QC stability of MSS parameters for cobas b 221 <6> systems. Internal investigations identified the formation of white deposits in the fluidic system, especially in the SD cartridge tubing, as the cause for the premature failure of the MSS parameters. These white deposits can potentially affect the fluidic pathways of both the Standby solution and the calibration solutions Cal1 to Cal4 (from the S3 Fluid Pack) and may reduce the lifetime of metabolite sensor cartridges. The cause of the white deposit has been identified as a chemical component of the S3 Fluid Pack solutions, as well as environmental bacterial contamination. Since this issue involves the S3 Fluid Pack, only the cobas b 221 <6> system is impacted. This issue may have an effect on the calibration of Glucose and Lactate parameters, which may lead to patient results being affected, as calibration drifts may not be detected by calibration and QC procedures. Glucose and Lactate are the only parameters affected by this issue. As a result, Roche is implementing an interim corrective action to be performed on your systems on a regular basis by Roche Field Engineering Specialist (FESs). Read the Urgent Medical Device Correction (UMDC) in its entirety. " Continue to run and maintain your cobas b 221 <6> system as per the Instructions for Use. " Complete the attached fax form and fax it to 1-888-656-6385. " File this UMDC for future reference. Please contact the Roche Support Network Customer Support Center, 24 hours a day, seven days a week at 1-800-526-2272 if you have questions about the information contained in this UMDC. Public Contact is Todd Siesky, at todd.siesky@roche.com.
- Quantity
- 103
- Distribution
- US Nationwide distribution.
- Lot, serial or model codes
- Model/Catalog/Part #: 1. cobas b221 <6>=Roche OMNI S6 SYSTEM; and 2. 03337154692 - cobas b 221<6>=Roche OMNI S6 SYSTEM CU Potassium - CEM, Calcium - JFP, Sodium - JGS, Chloride - CGZ, Blood Gases (PCO2, PO2) and pH - CHL, Hemoglobin -GKR, Hematocrit - GKF, Oxygen saturation, Carboxyhemoglobin - GHS, Oxyhemoglobin - GGZ, Methemoglobin - KHG, Deoxyhemoglobin - GKA, Lactic Acid - KHP, Glucose- CGA, Urea Nitrogen - CDS.
- 510(k) numbers
- ["K032311"]
- PMA numbers
- not on file
- Product code
- CGA
- Firm FEI
- 1823260
- Firm city
- Indianapolis
- Firm state
- IN
- Firm country
- not on file
Where this comes from
- Register
- FDA Medical Device Recalls (openFDA)
- Publisher
- U.S. Food and Drug Administration (openFDA)
- File
- device-recall-0001-of-0001.json.zip
- sha256
- b87518bfe2e8
- Size
- 288210821 bytes
- Published
- 2026-09-28
- Read
- 2026-09-29T08:25:23.626Z
- Source file
- Source file retained · verify
- Refresh due
- 2026-10-06
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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