H.6 investigation summary the complaint investigation for weak mirrored curves when using the bd respiratory viral panel for bd max¿ system (ref.(b)(4) lot: 2229195 was performed by the review of manufacturing records, retain material testing, customer¿s data analysis and verification of complaints history.Review of the manufacturing records of bd respiratory viral panel for bd max¿ system indicated that lot: 2229195 was manufactured according to specifications and met performance requirements.The retain material of bd respiratory viral panel kit for bd max¿ system from lot: 2229195 was tested and all results were as expected.Customer observed weak mirrored curves in the 530/565nm (vic) channel, which detects the respiratory syncytial virus (rsv) target, when a strong cov2 target (475/520nm (fam) channel) amplification is present, when using the bd respiratory viral panel for bd max¿ system.Customer provided runs 2259 and 2260 (pdf files only) from instrument ct1086 for investigation.Based on analysis, samples a10 (run 2259) and a1 (run 2260) were identified as the concerned samples.The manual pcr curves analysis revealed, as described by the customer, that when a strong cov2 target (475/520nm (fam) channel) amplification is present, a weak mirrored curves in the 530/565nm (vic) channel is observed.However, the downward curve observed in the vic channel is not unusual.It is an artefact linked to the assay design, without consequence on rsv detection.Data from the mixed infection/competitive interference study presented in the assay package insert (p0261, table 11), revealed that for the twenty samples co-infected with high load of cov-2 analytes, all gave expected positive rsv results.There is no issue with rsv detection in presence of sars-cov2 target.Based on the investigation and customer data analysis, no false negative result was obtained, and the assay performed as expected.There is no indication of a reagent issue based on the analysis of the complaints received for unusual curves on bd respiratory viral panel for bd max¿ system lot: 2229195.The root cause was not identified since no reagent issue was identified.Bd cannot confirm the complaint based on the investigation that was performed.No corrective and preventive action (capa) was initiated at this time since no new hazard was identified.Bd apologizes for the inconvenience that this may have caused.Bd life sciences quality will continue to monitor for trends.
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