HIGH

Illumina NextSeq 550Dx Reagent Kits Recalled for Leaky Flow Cells Affecting 11,916 Units Worldwide

Illumina recalled 11,916 NextSeq 550Dx reagent kits and flow cells worldwide after identifying a gasket defect that can leak during sequencing. The issue may cause run failures, no or insufficient data output, instrument fluidics clogs and potential exposure to toxic substances. Healthcare providers and users should stop using the affected kits and await recall instructions from Illumina.

Quick Facts at a Glance

Recall Date
October 28, 2025
Hazard Level
HIGH
Brand
Illumina
Category
Health & Personal Care
Sold At
Multiple Retailers
Geographic Scope
1 states
At-Risk Groups
GENERAL

Hazard Information

An instrument intended for sequencing DNA libraries with in vitro diagnostic assays is used with reagent kits including flow cells that have flow cell gaskets that have a quality issue, which may lead to flow cell leaks during runs, which could cause run failures, that may result in: No/insufficient data output, instrument fluidics clogs, toxic substance exposure to user.

What You Should Do

Patients and healthcare providers should stop using this device immediately. Follow the recall instructions provided by the manufacturer. Contact Illumina, Inc. or your healthcare provider for instructions. Notification method: Letter

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About This Product

The NextSeq 550Dx is a high-throughput sequencing instrument used for sequencing DNA libraries in diagnostic workflows. The recall concerns reagent kits with flow cells that may leak due to gasket defects, risking run failures and exposure to hazardous substances.

Why This Is Dangerous

Gasket defects in flow cells can cause leaks during sequencing. Leaks may lead to clogs in instrument fluidics, data loss and potential exposure to toxic materials.

Industry Context

This recall is not described as part of a broader industry pattern in the provided data.

Real-World Impact

Labs may experience halted runs and data gaps. Operators must halt use of affected kits and coordinate with Illumina for refunds or replacements. The recall could affect diagnostic workflows and scheduling.

Practical Guidance

How to identify if yours is affected

  1. Compare kit REF numbers to the recalled references (20028870, 20028871, 20064341, 20064344, 20064345, 20064346, 20062316, 15050205).
  2. Check for UDI-DI numbers on packaging if available.
  3. Inspect flow cells and gasket components for signs of damage or leakage before use.
  4. If any match or uncertainty exists, stop using the kit and contact Illumina for instructions.

Where to find product info

Recall notices and identification information are provided by Illumina and available on the FDA enforcement page linked in the recall notice.

What timeline to expect

Refunds or replacements are generally processed within 4-8 weeks after initiating the recall.

If the manufacturer is unresponsive

  • Document all communications with Illumina and healthcare providers.
  • Escalate to regulatory authorities such as the FDA if the company is unresponsive.

How to prevent similar issues

  • Verify recall status before using any reagent kits or flow cells in sequencing workflows.
  • Maintain an up-to-date inventory of kits with their REF numbers and UDI-DI codes.
  • Ask vendors for updated versions or safety alerts before purchase.

Documentation advice

Keep a copy of the recall letter, product labels, kit REF/Flow Cell REF, UDI-DI information, and all correspondence with Illumina.

Product Details

- NextSeq 550Dx High Output Reagent Kit v2.5 (75 cycles) IVD, REF: 20028870 - NextSeq 550Dx High Output Reagent Kit v2.5 (300 cycles) IVD, REF: 20028871 - CN NextSeq 550Dx High Output Reagent Kit v2.5 (75 cycles) IVD, REF: 20064341 - CN NextSeq 550Dx High Output Reagent Kit v2.5 (300 cycles) IVD, REF: 20064344 - CN NextSeq 550Dx Mid Output Reagent Kit v2.5 (150 cycles) IVD, REF: 20064345 - CN NextSeq 550Dx Mid Output Reagent Kit v2.5 (300 cycles) IVD, REF: 20064346 - CN NEXTSEQ 550Dx HO FLOW CELL V2.5, REF: 20062316 - CN NEXTSEQ 550Dx MO FLOW CELL V2.5, REF: 20062530 - FLOWCELL, FIT FLUIDICS,

Reported Incidents

No injuries or incidents have been reported.

Key Facts

  • 11,916 units recalled worldwide
  • Variants include 75-cycle and 300-cycle HO reagent kits and CN HO/MO flow cells
  • Global distribution to 11 US states (PA, NJ, CA, NC, UT, IL, MD, NY, VA, WV, SD, TX, AL, SC, TN, KY,
  • MI) and numerous countries (DK, SA, FR, DE, IT, CN, PL, GB, TH, GR, VN, BE, ES, KR, AU, JP, SG, SE,
  • etc.)
  • Hazard: flow cell gasket defects may leak during runs, causing data loss and potential exposure to a

Safety Guide

Not sure what to do next? Our guide walks you through the process step by step.

Read: What to Do When You Find a Recalled Product

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Safety Assessment

Risk LevelHIGH
Severity Score
8/ 10
Affected Groups
GENERAL
Injury Types
POISONING

Product Classification

Product Details

Model Numbers
NextSeq 550Dx High Output Reagent Kit v2.5 (75 cycles) IVD
NextSeq 550Dx High Output Reagent Kit v2.5 (300 cycles) IVD
CN NextSeq 550Dx High Output Reagent Kit v2.5 (75 cycles) IVD
CN NextSeq 550Dx High Output Reagent Kit v2.5 (300 cycles) IVD
CN NextSeq 550Dx Mid Output Reagent Kit v2.5 (150 cycles) IVD
+4 more
Affected States
ALL
Report Date
December 10, 2025
Recall Status
ACTIVE

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