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A hemodialysis (hd) clinic biomedical technician (biomed) reported to fresenius customer service that a lot of naturalyte had low conductivity.The biomedical technician stated they calibrated the machine, however the issue was not resolved.The specific gravity reading was obtained using a hydrometer and the reading was low: 1.188 (units unknown).The lot number of the naturalyte used was changed and the conductivity was within range.A return goods authorization (rga) was issued to the clinic for product return.Additional information was requested, however to date has not been received.
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Additional information: d10, h3 plant investigation: a product history review was performed.A review of the complaint management system identified 11 additional complaints related to conductivity issues with the reported lot.A review of the product inventory records for lot no.Indicated that 2194 cases of finished product were manufactured for distribution with no noted nonconformances.After reviewing the finished product release summary, it was determined that 20lxac041 met release specifications.As of 11/12/2020 no samples were returned.Samples are not needed to confirm the allegation.A sample retain of the reported lot was tested and found to be within specifications.Through other complaint allegations of the same issue for lots 20lxac056, 20lxac058, and 20lxac076, there were companion samples available for testing which were tested at both the oregon and irving laboratories and results were found to be conflicting.Due to the conflicting results found between the laboratories, the oregon test methods were reviewed and a deficiency was found in the test method pertaining to the sodium and potassium analyte tests.Because of the deficiency found in the test method, it was determined that lot 20lxac041 did not meet release specifications and the allegation conductivity low was confirmed.In conclusion, 20lxac041 release testing was found to be compromised due to the deficient test method.A non-conformance was opened for allegations of conductivity issues and escalated to a corrective action preventative action (capa).Based on the investigation performed, cause was traced to manufacturing.
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