Access Total T4 Calibrator recall (Beckman Coulter, Inc.)
Medical deviceClass IIOngoing
Summary: Beckman Coulter, Inc. is recalling Access Total T4 Calibrator, Catalog No. 33805. Reason: 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.
What is being recalled
Access Total T4 Calibrator, Catalog No. 33805
Why
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.
How serious is it
Class II is the middle level: using or being exposed to this product may cause temporary or medically reversible health problems, and the chance of serious harm is remote.
Where it was sold
Worldwide distribution - US Nationwide and the countries of Argentina, Austria, Bangladesh, Bolivia (Plurinational State of), Bosnia and Herzegovina, Brazil, Canada, China, C¿te d'Ivoire, Croatia, Czechia, Denmark, Egypt, El Salvador, Ethiopia, Georgia, Germany, Greece, Hong Kong, India, Indonesia, Ireland, Italy, Japan, Kazakhstan, Korea, Republic of, Kosovo, Lebanon, Libya, Malawi, Mexico, Myanmar, Nepal, Netherlands, New Zealand, Nigeria, North Macedonia, Pakistan, Panama, Peru, Philippines, Poland, Portugal, Puerto Rico, Qatar, Romania, Russian Federation, Saudi Arabia, Serbia, Singapore, Slovakia, Somalia, Spain, Switzerland, Taiwan, Province of China, Thailand, Turkey, United Arab Emirates, Uzbekistan, Viet Nam, Yemen. (states named: Georgia, Puerto Rico)
How to tell if yours is affected
UDI-DI 15099590225872 Lots 538729, 538815, 538898, 539107, 539243
What to do
Check the model, lot or serial numbers above against your device. If yours is affected, contact the manufacturer or your healthcare provider before you stop using a device you rely on.
Recall facts
| Recall number | Z-1922-2026 |
| Category | Medical device |
| Agency | U.S. Food and Drug Administration (FDA) |
| Severity | Class II |
| Status | Ongoing |
| Recall started | March 16, 2026 |
| Reported | April 29, 2026 |
| Company | Beckman Coulter, Inc. |
| Company location | Chaska, MN, United States |
| Initiated by | Voluntary: Firm initiated |
| Quantity | 2068 US, 2830 OUS |
More recalls from Beckman Coulter, Inc. · all medical device recalls · recalls from March 2026