Beckman Coulter Access Immunoassay System Hybritech PSA Calibrators, Product Number: 37205. The Access Hybritech PSA assay is a paramagnetic particle, chemiluminescent immunoassay for the quantitative determination of total prostate specific antigen (PSA) levels in human serum using the Access Immunoassay Systems.

Beckman Coulter incorrectly shipped Access Hybritech PSA calibrators containing dual calibration cards (Hybritech and WHO) to some Access Hybritech PSA Customers. The WHO calibration for PSA is not currently approved in the United States.

An "Urgent: Product Corrective Action" letter dated January 10, 2008 was issued via fax or mail to customers. The letter described the issue and instructed consignees to discontinue use and discard the affected product. Consignees were also asked to complete and return a "Fax-Back Form" via fax (1-952-368-7610) or mail to Beckman Coulter, Inc. within 10 days of receiving the notification letter. Further questions should be addressed to Beckman Coulter Customer Technical Support at 1-800-854-3633.