Electrode, Ion Specific, Potassium

Reports per year

Source: FDA adverse event reports by year received, 2012–2026. Reporting paused during the 2026 MAUDE-to-AEMS transition and has since resumed.

Recent recalls

• 2026-02-13Open, ClassifiedNonconforming Material/Component

  Medica Capillary Tubes; EasyBloodGas/EasyStat Capillary Tube Kit.

  A systematic positive bias of up to 20% was identified across the reportable potassium range, resulting in false elevation results of patient samples when using Medica s capillary tubes.

• 2025-11-26Open, ClassifiedDevice Design

  FlexLab (FLX); Version: FLX-217-10;

  The Aliquoter Module (mALX) may generate secondary sample tubes without labels or with mismatched labels which may result in delayed results or erroneous results. This error occurs if the operators open the printer head of mALX to perform error recoveries or maintenance procedures and do not empty the printer tubes buffer to remove all the secondary sample tubes.

• 2025-11-26Open, ClassifiedDevice Design

  FlexLab (FLX); Version: FLX-217-40;

  The Aliquoter Module (mALX) may generate secondary sample tubes without labels or with mismatched labels which may result in delayed results or erroneous results, this error occurs if the operators open the printer head of mALX to perform error recoveries or maintenance procedures and do not empty the printer tubes buffer to remove all the secondary sample tubes

• 2025-10-09Open, ClassifiedNo Marketing Application

  FlexLab (FLX) System. Potassium Test System. in vitro diagnostic

  The FlexLab System Sample Integrity Module (SIM) includes function that determines the hemolysis, icterus, and lipemia (HIL) in blood samples. This function has not been evaluated for safety and effectiveness by the FDA, so its use may cause an increase in erroneous results or a delay in patient results.

• 2025-10-09Open, ClassifiedNo Marketing Application

  FlexLab X (FXX) System. Potassium Test System. in vitro diagnostic

  The FlexLab X System Sample Integrity Module (SIM) includes function that determines the hemolysis, icterus, and lipemia (HIL) in blood samples. This function has not been evaluated for safety and effectiveness by the FDA, so its use may cause an increase in erroneous results or a delay in patient results.

• 2023-12-15Open, ClassifiedSoftware Design Change

  Roche Cobas 8000 and Cobas PRO Interface Module (CO8 IM)- IVD FlexLab Automation System -a modular system designed to automate Pre-Analytical and Post-Analytical processing, sample handling in order to automate sample processing in the Laboratory. Hardware versions: FLX-247-00 Firmware versions: COBASa_2.2.0, COBASa_2.3.0

  Firmware of the Interface Module with Roche Cobas 8000 and Cobas PRO (CO8 IM) may lead to a delayed sample tube processing.

• 2023-10-31Open, ClassifiedUnder Investigation by firm

  RX Imola-IVD Clinical Chemistry Analyzer Catalog Number: RX4900. RX4900R (refurbished)

  RX Parameter rerun settings (Sample Volume Low/High), and Dilutions used for Auto reruns, not meeting sample re-run conditions when samples are above or below assay range and may result i issues with the re-run feature conditions when incorrectly. Potential to report incorrectly.

• 2023-05-04Open, ClassifiedUnder Investigation by firm

  Input Output Module (IOM) FLX-201-Laboratory Automation system Brand names of the same product: FlexLab (FLX), Accelerator a3600 (ACP), Aptio Automation (AP2) Part Numbers: FLX-201-00, APT-201-00, APT-253-00 ACP-201-00, FLX-201-10, FLX-253-10, FLX-253-11

  Firmware versions have the potential to mis-associate sample IDs leading to incorrect results or delayed sodium, potassium, and chloride patient results. Falsely increased or decreased electrolytes can lead to either inappropriate treatment of normal results, or failure to treat abnormal results resulting in abnormal levels. Abnormal potassium levels can result in weakness, polyuria, ileus, psychiatric disturbances, cardiac arrhythmias, respiratory depression, and death. Abnormal sodium levels can result in CNS disturbances and disturbances of water balance. Abnormal chloride levels can lead to acid base disturbances which can lead to respiratory and cardiac compromise. The event may occur only if all the following conditions occurs in few milliseconds timeframe: - The module is releasing a sample tube (Tube A) just placed into the carrier - Another sample tube (Tube B) is erroneously not diverted into the module buffer lane due to a malfunction of the divert gate Only in this specific scenario, the Tube A may be released by the module as Tube B due to a miscommunication between the module firmware and the Automation software without any error message. The Automation System loses the traceability of Tube A. It manages both Tube A (incorrectly identified as Tube B) and the real Tube B according to the test orders not performed yet on Tube B. Inpeco has released a Technical Service Bulletin with the procedure to correctly update the firmware. The firmware upgrade will be performed by Field Service Engineers. A CAPA (Corrective Action Preventive Action) has been opened to deeply investigate the root cause and identify possible process lack in order to avoid reoccurrences.

• 2023-05-04Open, ClassifiedUnder Investigation by firm

  Storage and Retrieval Module (SRM)-Laboratory Automation system Brand names of the same product: FlexLab (FLX), Accelerator a3600 (ACP), Aptio Automation (AP2) Part Numbers: ACP-207-00, ACP-207-01, ACP-230-00, ACP-230-01 APT-207-00, APT-207-01, APT-230-00, APT-230-01 FLX-207-00, FLX-207-01, FLX-207-02, FLX-230-00, FLX-230-01, FLX-230-02 FLX-207-10, FLX-207-11, FLX-230-10

  Firmware versions have the potential to mis-associate sample IDs leading to incorrect results or delayed sodium, potassium, and chloride patient results. Falsely increased or decreased electrolytes can lead to either inappropriate treatment of normal results, or failure to treat abnormal results resulting in abnormal levels. Abnormal potassium levels can result in weakness, polyuria, ileus, psychiatric disturbances, cardiac arrhythmias, respiratory depression, and death. Abnormal sodium levels can result in CNS disturbances and disturbances of water balance. Abnormal chloride levels can lead to acid base disturbances which can lead to respiratory and cardiac compromise. The event may occur only if all the following conditions occurs in few milliseconds timeframe: - The module is releasing a sample tube (Tube A) just placed into the carrier - Another sample tube (Tube B) is erroneously not diverted into the module buffer lane due to a malfunction of the divert gate Only in this specific scenario, the Tube A may be released by the module as Tube B due to a miscommunication between the module firmware and the Automation software without any error message. The Automation System loses the traceability of Tube A. It manages both Tube A (incorrectly identified as Tube B) and the real Tube B according to the test orders not performed yet on Tube B. Inpeco has released a Technical Service Bulletin with the procedure to correctly update the firmware. The firmware upgrade will be performed by Field Service Engineers. A CAPA (Corrective Action Preventive Action) has been opened to deeply investigate the root cause and identify possible process lack in order to avoid reoccurrences.

• 2023-05-04Open, ClassifiedUnder Investigation by firm

  PVT Interface Module (PVT)-Laboratory Automation system Brand names of the same product: FlexLab (FLX), Accelerator a3600 (ACP), Aptio Automation (AP2) Part Numbers: 72747000.A

  Firmware versions have the potential to mis-associate sample IDs leading to incorrect results or delayed sodium, potassium, and chloride patient results. Falsely increased or decreased electrolytes can lead to either inappropriate treatment of normal results, or failure to treat abnormal results resulting in abnormal levels. Abnormal potassium levels can result in weakness, polyuria, ileus, psychiatric disturbances, cardiac arrhythmias, respiratory depression, and death. Abnormal sodium levels can result in CNS disturbances and disturbances of water balance. Abnormal chloride levels can lead to acid base disturbances which can lead to respiratory and cardiac compromise. The event may occur only if all the following conditions occurs in few milliseconds timeframe: - The module is releasing a sample tube (Tube A) just placed into the carrier - Another sample tube (Tube B) is erroneously not diverted into the module buffer lane due to a malfunction of the divert gate Only in this specific scenario, the Tube A may be released by the module as Tube B due to a miscommunication between the module firmware and the Automation software without any error message. The Automation System loses the traceability of Tube A. It manages both Tube A (incorrectly identified as Tube B) and the real Tube B according to the test orders not performed yet on Tube B. Inpeco has released a Technical Service Bulletin with the procedure to correctly update the firmware. The firmware upgrade will be performed by Field Service Engineers. A CAPA (Corrective Action Preventive Action) has been opened to deeply investigate the root cause and identify possible process lack in order to avoid reoccurrences.