--- title: "Atellica CH ¿2-Microglobulin (B2M) -M) Assay for in vitro diagnostic use in t... — FDA record Z-0440-2022 | Is It on Recall" description: "¿2 Microglobulin (B2M) Reagent Lot 211446 Bias with Quality Control and Patient Sample Results. Positive bias on patient samples of up to +20.9% at a B2M concen" url: https://isitonrecall.com/recall/fda-device-z-0440-2022-atellica-ch-2-microglobulin-b2m-m-assay-for-in-vitro-diagnostic-use-in-the-quantitative-determinatio/ updated: 2026-10-01 site: "Is It on Recall" language: en --- [Recall archive](https://isitonrecall.com/archives/) / FDA device enforcement # Atellica CH ¿2-Microglobulin (B2M) -M) Assay for in vitro diagnostic use in the quantitative determination of ¿2-micr... — FDA record Z-0440-2022 Reported terminated Status as reported in the agency record. FDA warns that enforcement status may not track the current recall lifecycle; check the current official notice. Source date Dec 1, 2021. Retrieved Oct 1, 2026. Last updated Oct 1, 2026. Archive changed Oct 1, 2026. USDA FSIS records are unavailable; [check FSIS directly](https://www.fsis.usda.gov/recalls). [Source coverage and dates](https://isitonrecall.com/sources/). ## What the record says - **Product**: Atellica CH ¿2-Microglobulin (B2M) -M) Assay for in vitro diagnostic use in the quantitative determination of ¿2-microglobulin in human serum and plasma Siemens Material Number (SMN): 11097635 - **Reason**: ¿2 Microglobulin (B2M) Reagent Lot 211446 Bias with Quality Control and Patient Sample Results. Positive bias on patient samples of up to +20.9% at a B2M concentration of approximately 1.5 mg/L and a negative bias on patient samples of up to -10.5% at a B2M concentration of approximately 15 mg/L - **Classification**: Class II - **Recalling firm**: Siemens Healthcare Diagnostics, Inc. - **Quantity**: US: 46 units OUS: 794 units - **Agency-reported status**: Terminated - **Source record identifier**: Z-0440-2022 [Open the official record](https://api.fda.gov/device/enforcement.json?search=recall_number%3A%22Z-0440-2022%22) [What the recall classes mean](https://isitonrecall.com/guides/recall-classes/). Classification is an agency assessment, not individual medical advice. ## Lot and product identifiers | Label field | Details supplied by the agency | | --- | --- | | Lot, code or applicability | Lot Number: 211446 UDI: 00630414595566 | Match all identifying details in the current notice. A brand name alone is not enough. ## Distribution Worldwide distribution - US Nationwide distribution in the states of CA, CO, MA, MD, MS, NC, NE, NH, OH, VA, WI and the countries of Argentina, Australia, Austria, Belgium, Brazil, Bulgaria, Czech Republic, Denmark, Ecuador, France, Germany, Greece, India, Iran, Israel, Italy, Japan, Mexico, Morocco, Oman, P.R. China, Pakistan, Philippines, Portugal, Slovakia, South Africa, Spain, Switzerland, Turkey, United Kingdom, Uruguay. States below are derived from the distribution text, including nationwide wording. They are not inferred from the firm's address. - [Alaska](https://isitonrecall.com/state/alaska/) - [Alabama](https://isitonrecall.com/state/alabama/) - [Arkansas](https://isitonrecall.com/state/arkansas/) - [Arizona](https://isitonrecall.com/state/arizona/) - [California](https://isitonrecall.com/state/california/) - [Colorado](https://isitonrecall.com/state/colorado/) - [Connecticut](https://isitonrecall.com/state/connecticut/) - [Delaware](https://isitonrecall.com/state/delaware/) - [Florida](https://isitonrecall.com/state/florida/) - [Georgia](https://isitonrecall.com/state/georgia/) - [Hawaii](https://isitonrecall.com/state/hawaii/) - [Iowa](https://isitonrecall.com/state/iowa/) - [Idaho](https://isitonrecall.com/state/idaho/) - [Illinois](https://isitonrecall.com/state/illinois/) - [Indiana](https://isitonrecall.com/state/indiana/) - [Kansas](https://isitonrecall.com/state/kansas/) - [Kentucky](https://isitonrecall.com/state/kentucky/) - [Louisiana](https://isitonrecall.com/state/louisiana/) - [Massachusetts](https://isitonrecall.com/state/massachusetts/) - [Maryland](https://isitonrecall.com/state/maryland/) - [Maine](https://isitonrecall.com/state/maine/) - [Michigan](https://isitonrecall.com/state/michigan/) - [Minnesota](https://isitonrecall.com/state/minnesota/) - [Missouri](https://isitonrecall.com/state/missouri/) - [Mississippi](https://isitonrecall.com/state/mississippi/) - [Montana](https://isitonrecall.com/state/montana/) - [North Carolina](https://isitonrecall.com/state/north-carolina/) - [North Dakota](https://isitonrecall.com/state/north-dakota/) - [Nebraska](https://isitonrecall.com/state/nebraska/) - [New Hampshire](https://isitonrecall.com/state/new-hampshire/) - [New Jersey](https://isitonrecall.com/state/new-jersey/) - [New Mexico](https://isitonrecall.com/state/new-mexico/) - [Nevada](https://isitonrecall.com/state/nevada/) - [New York](https://isitonrecall.com/state/new-york/) - [Ohio](https://isitonrecall.com/state/ohio/) - [Oklahoma](https://isitonrecall.com/state/oklahoma/) - [Oregon](https://isitonrecall.com/state/oregon/) - [Pennsylvania](https://isitonrecall.com/state/pennsylvania/) - [Rhode Island](https://isitonrecall.com/state/rhode-island/) - [South Carolina](https://isitonrecall.com/state/south-carolina/) - [South Dakota](https://isitonrecall.com/state/south-dakota/) - [Tennessee](https://isitonrecall.com/state/tennessee/) - [Texas](https://isitonrecall.com/state/texas/) - [Utah](https://isitonrecall.com/state/utah/) - [Virginia](https://isitonrecall.com/state/virginia/) - [Vermont](https://isitonrecall.com/state/vermont/) - [Washington](https://isitonrecall.com/state/washington/) - [Wisconsin](https://isitonrecall.com/state/wisconsin/) - [West Virginia](https://isitonrecall.com/state/west-virginia/) - [Wyoming](https://isitonrecall.com/state/wyoming/) ## Dates in the source - **Report date**: Jan 5, 2022 - **Recall initiation date**: Dec 1, 2021 - **Center classification date**: Dec 29, 2021 - **Termination date**: Jul 7, 2023 FDA company pages use the listing date; enforcement records use initiation dates; CPSC uses recall date; NHTSA uses report-received date. These dates are not interchangeable. ## What to do next Read the official notice for the action that applies to your exact product. [Read the current instructions](https://api.fda.gov/device/enforcement.json?search=recall_number%3A%22Z-0440-2022%22) ## Related records [Medical devices records](https://isitonrecall.com/category/medical-devices/) [Siemens Healthcare Diagnostics, Inc. records](https://isitonrecall.com/brand/siemens-healthcare-diagnostics-inc/)