FDA Adverse Event Malfunction Summary report: N

ARCHITECT FREE T4

MDR report key: 24778933 · Received April 3, 2026

Report

Report Number
3005094123-2026-00161
Event Type
Malfunction
Date Received
April 3, 2026
Date of Event
March 26, 2026
Report Date
May 7, 2026
Manufacturer
ABBOTT IRELAND DIAGNOSTICS DIVISION
Product Code
CEC
UDI-DI
00380740173678
Product Problem
Yes
Report Source
Manufacturer report
Reporter Location
CH
Reporter Occupation
OTHER HEALTH CARE PROFESSIONAL
Health Professional
Yes

Narratives

Additional Manufacturer Narrative · 0

AN EVALUATION IS IN PROCESS. A FOLLOW-UP REPORT WILL BE SUBMITTED WHEN THE EVALUATION IS COMPLETE. SECTION A PATIENT INFORMATION: REFER TO SECTION B5 FOR COMPLETE PATIENT INFORMATION. THIS REPORT IS BEING FILED ON AN INTERNATIONAL PRODUCT, LIST NUMBER 07K65-77 THAT HAS A SIMILAR PRODUCT DISTRIBUTED IN THE US, LIST NUMBER 7K65, WITH 510K/PMA/BLA NUMBER K173122.

Description of Event or Problem · 0

THE CUSTOMER REPORTED FALSELY ELEVATED ARCHITECT FREE T4 RESULTS GENERATED ON THE ARCHITECT I2000SR ANALYZER FOR A 46-YEAR-OLD FEMALE PATIENT DIAGNOSED WITH A THYROID NODULE. THE FOLLOWING DATA WAS PROVIDED: ON (B)(6) 2026, PERFORMED THE THYROID FUNCTION 3-PANEL ASSAY: FT4: > 64.35 PMOL/L, ELEVATED (REFERENCE RANGE 9.01-19.05 PMOL/L) THE CUSTOMER RETESTED THE SAMPLE AND GENERATED A RESULT OF > 64.35 PMOL/L AND RELEASED THE RESULT TO THE CLINICAL PHYSICIAN. THE CLINICAL PHYSICIAN QUESTIONED THE RESULT. ON (B)(6) 2026, THE CUSTOMER RE-CENTRIFUGED THE SAMPLE AND RETESTED FREE T4 TWICE. THE SAMPLE GENERATED FREE T4 RESULTS OF 14.21 PMOL/L AND 14.31 PMOL/L (NORMAL). OTHER THYROID FUNCTION TEST RESULTS: TSH: 0.396 UIU/ML, NORMAL (REFERENCE RANGE: 0.350-4.94 UIU/ML) FT3: 4.86 PMOL/L, NORMAL (REFERENCE RANGE 2.43-6.01 PMOL/L) THERE WAS NO IMPACT TO PATIENT MANAGEMENT REPORTED.

Devices

Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
114203 ARCHITECT FREE T4 RADIOIMMUNOASSAY, FREE THYROXINE CEC ABBOTT IRELAND DIAGNOSTICS DIVISION 80039UD02 00380740173678

Patients

Seq Age Sex Outcome Treatment
1