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Recall data is sourced from official U.S. government agencies (CPSC, FDA, NHTSA, USDA) and processed using AI to improve readability. This site is not affiliated with or endorsed by any government agency. Always refer to the original agency notice for authoritative information.

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Medium RiskFDA Device
Medical Devices/Diagnostic Equipment

Access Total T4 Calibrator Recalled for Inaccurate Patient Test Results

Agency Publication Date: April 22, 2026
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Summary

Beckman Coulter is recalling 2,068 units of Access Total T4 Calibrator (Catalog No. 33805) due to a defect that causes inaccurate, falsely low thyroid test results on certain laboratory instruments. These inaccurate results can lead to unnecessary diagnostic testing, incorrect dosing for pregnant patients, or delayed treatment for hyperthyroidism. While no injuries have been reported, the defect involves specific lots used in medical laboratories and hospitals worldwide.

Risk

The calibrator exhibits a negative bias on DxI 600 and 800 instruments, meaning it may produce thyroid hormone readings that are lower than the patient's actual levels. This can result in patients receiving treatment for disorders they do not have or failing to receive necessary treatment for overactive thyroid conditions.

What You Should Do

  1. Identify if your laboratory uses the Access Total T4 Calibrator, Catalog No. 33805.
  2. Check the packaging for lot numbers 538729, 538815, 538898, 539107, or 539243.
  3. Stop using the recalled product immediately.
  4. Contact Beckman Coulter or your distributor to arrange for a return, replacement, or correction of the affected calibrator lots.
  5. Call the FDA Consumer Complaint hotline at 1-888-463-6332 for additional questions regarding this recall.

Your Remedy Options

๐Ÿ“‹Other Action
How to: Stop using the recalled product. Contact the manufacturer or your distributor to arrange return, replacement, or correction.

Affected Products

Product: Access Total T4 Calibrator
Model / REF:
33805
Lot Numbers:
538729
538815
538898
539107
539243
UDI:
15099590225872

Used on DxI 600/800 instruments.

Additional Information

Agency: Food and Drug Administration (FDA)
Event ID: 98591
Status: Active
Manufacturer: Beckman Coulter, Inc.
Sold By: Medical laboratories; Hospitals
Manufactured In: United States
Units Affected: 2,068
Distributed To: Nationwide

Were You Affected by This Recall?

If you or a family member were harmed by this recalled product, you may have legal rights. Consider consulting a consumer protection attorney to understand your options for compensation.

Find an Attorney

This is general information, not legal advice. Go Backs is not a law firm and does not provide legal services.

AI-Enhanced Content: The summary, action steps, and risk assessment on this page were generated by AI from official government recall data to improve readability. This is not legal or medical advice. Always refer to the official agency sources below for authoritative information.

Sources: FDA iRES ยท Raw API Response

openFDA Disclaimer: This recall information is sourced from the openFDA API. Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. Refer to the openFDA terms of service for more information.