CFR›Title 42›Chapter IV›Part 493›Subpart H›Subject Group Proficiency Testing by Specialty and Subspecialty for Laboratories Performing Tests of Moderate Complexity (Including the Subcategory), High Complexity, or Any Combination of These Tests›42 CFR 493.857 Citation42 CFR 493.857CorpusDaily eCFRDisplayed edition2026-08-13Last updated2026-08-13 § 493.857 Condition: Immunohematology.The specialty of immunohematology includes four subspecialties for the purposes of proficiency testing: ABO group and D (Rho) typing; unexpected antibody detection; compatibility testing; and antibody identification. Previous 493.855 § 493.855 Standard; Cytology: gynecologic examinations. Next 493.859 § 493.859 Standard; ABO group and D (Rho) typing.
§ 493.857 Condition: Immunohematology.The specialty of immunohematology includes four subspecialties for the purposes of proficiency testing: ABO group and D (Rho) typing; unexpected antibody detection; compatibility testing; and antibody identification.