Access Total T4 Calibrator, Catalog No. 33805
FDA Recall Notice
Source: U.S. Food and Drug Administration (FDA) — official FDA notice for recall FDA-Z-1922-2026.
Beckman Coulter has identified that Access Total T4 Calibrator lots (PN 33805) exhibit a negative bias on DxI 600/800 instruments, with slopes outside product specifications. A false low patient result could cause a patient to undergo unnecessary additional diagnostic testing. A patient may be treated for a disorder not present or receive delayed treatment for hyperthyroidism. For a pregnant patient being monitored for thyroid hormone supplementation, incorrect treatment or dose may be used. A delayed patient results could cause repeat blood draw with associated complications.
Corrective Action (per FDA)
Source: U.S. Food and Drug Administration (FDA) — official FDA notice for recall FDA-Z-1922-2026.
Recall ongoing. Follow firm instructions.
🩺 Talk to your doctor or pharmacist
Product Recall Tracker does not provide medical advice. Any specific instructions about this medication or device come directly from the FDA notice above. Before making any change to your treatment:
- Do not stop, change, or discard your prescription on your own.
- Call your doctor or pharmacist and ask whether this FDA notice applies to your prescription (have the brand name, dosage, and lot number ready if you can find them).
- Follow your clinician's guidance on whether to continue, switch, or return the product.
- If you have experienced a reaction, seek medical care and report it to the FDA via MedWatch.
- For the official FDA notice, visit the FDA recalls page.
Consumer Contact (per FDA)
Source: U.S. Food and Drug Administration (FDA) — official FDA notice for recall FDA-Z-1922-2026.
Beckman Coulter, Inc.
About the U.S. Food and Drug Administration
The FDA regulates drugs, medical devices, food, cosmetics, and tobacco. Adverse event reports and recall notices are the main public safety signal.
Visit FDA.gov →📣 Report an adverse event to the FDA (MedWatch)
If you had an adverse reaction, side effect, or device malfunction from this medication or device, report it to the FDA through MedWatch. Talk to your doctor or pharmacist first — do not stop a prescription on your own. Reports help the FDA detect rare or emerging safety signals and can lead to label changes or recalls.
Beckman Coulter, Inc. Recall FAQ
Beckman Coulter, Inc. is the subject of a medical devices safety report: Access Total T4 Calibrator, Catalog No. 33805. The notice was published on March 16, 2026 by the U.S. Food and Drug Administration (FDA). Approximately 2,068 units are potentially affected.