Siemens Healthcare Diagnostics, Inc. IMMULITE 2000 Thyroglobulin (US)- For in vitro diagnostic use with the IMMULITE 2000 Systems Analyzers (IMMULITE 2000/ IMMULITE 2000 XPi) for the quantitative measurement of thyroglobulin in serum or heparinized plasma, as an aid in monitoring patients who have undergone thyroidectomy. Catalog # L2KTY2(D) Siemens Material Number (SMN): 10381647 Recall
Check Your Product
According to the U.S. Food and Drug Administration (FDA)
Product
IMMULITE 2000 Thyroglobulin (US)- For in vitro diagnostic use with the IMMULITE 2000 Systems Analyzers (IMMULITE 2000/ IMMULITE 2000 XPi) for the quantitative measurement of thyroglobulin in serum or heparinized plasma, as an aid in monitoring patients who have undergone thyroidectomy. Catalog # L2KTY2(D) Siemens Material Number (SMN): 10381647
Brand
Siemens Healthcare Diagnostics, Inc.
Lot Codes / Batch Numbers
UDI: 00630414972084 Kit Lots: D431, D433, D434, D435, and D436
Products Sold
UDI: 00630414972084 Kit Lots: D431, D433, D434, D435, and D436
Siemens Healthcare Diagnostics, Inc. is recalling IMMULITE 2000 Thyroglobulin (US)- For in vitro diagnostic use with the IMMULITE 2000 Systems Analyz due to Potential for Functional Sensitivity to not meet Instructions For Use (IFU) claims with the kit lots; control level one may result outside of publishe. Based on FDA medical device recall database.
Summary derived from FDA notice
Reason for Recall
As stated by FDA
Potential for Functional Sensitivity to not meet Instructions For Use (IFU) claims with the kit lots; control level one may result outside of published ranges; when control results are in range, users may observe increased imprecision with low level patient samples
Recommended Action
Per FDA guidance
Siemens Healthcare issued An Urgent Medical Device Correction (UMDC) to US affected customers by FedEx beginning 12/08/2022. An Urgent Field Safety Notice (UFSN) was issued to OUS Siemens reporting sites with affected customers, for distribution and regional reporting to their local competent authorities beginning on 12/07/2022. Letter states reason for recall, health risk and action to take: Discontinue use and discard Thyroglobulin kit lots listed in Table 1. Please review this letter with your Medical Director, including consideration for review of previously generated results as outlined above in Risk to Health. Complete and return Field Correction Effectiveness Check Form attached to this letter within 30 days. Review your inventory of these products determine your laboratory s replacement needs and to provide information to Siemens Healthineers for reporting to the authorities. If you have received any complaints of illness or adverse events associated with the products listed in Table 1, immediately contact your local Siemens Healthineers Customer Care Center or your local Siemens Healthineers technical support representative. Please retain this letter with your laboratory records and forward this letter to those who may have received this product. If you have any questions, please contact your Siemens Healthineers Customer Care Center or your local Siemens Healthineers technical support representative.
Verify this information on the official source
For complete details and official instructions, check the U.S. Food and Drug Administration (FDA) directly.
View official FDA recall noticePage updated: Jan 10, 2026