U.S. Code of Federal Regulations

Regulations most recently checked for updates: Sep 16, 2025

All TitlesTitle 42Chapter IVPart 493Subpart H - Subpart H—Participation in Proficiency Testing for Laboratories Performing Nonwaived Testing

PROFICIENCY TESTING BY SPECIALTY AND SUBSPECIALTY FOR LABORATORIES PERFORMING TESTS OF MODERATE COMPLEXITY (INCLUDING THE SUBCATEGORY), HIGH COMPLEXITY, OR ANY COMBINATION OF THESE TESTS
§ 493.821 - Condition: Microbiology.
§ 493.823 - Standard; Bacteriology.
§ 493.825 - Standard; Mycobacteriology.
§ 493.827 - Standard; Mycology.
§ 493.829 - Standard; Parasitology.
§ 493.831 - Standard; Virology.
§ 493.833 - Condition: Diagnostic immunology.
§ 493.835 - Standard; Syphilis serology.
§ 493.837 - Standard; General immunology.
§ 493.839 - Condition: Chemistry.
§ 493.841 - Standard; Routine chemistry.
§ 493.843 - Standard; Endocrinology.
§ 493.845 - Standard; Toxicology.
§ 493.849 - Condition: Hematology.
§ 493.851 - Standard; Hematology.
§ 493.853 - Condition: Pathology.
§ 493.855 - Standard; Cytology: gynecologic examinations.
§ 493.857 - Condition: Immunohematology.
§ 493.859 - Standard; ABO group and D (Rho) typing.
§ 493.861 - Standard; Unexpected antibody detection.
§ 493.863 - Standard; Compatibility testing.
§ 493.865 - Standard; Antibody identification.
§ 493.801 - Condition: Enrollment and testing of samples.
§ 493.803 - Condition: Successful participation.
§ 493.807 - Condition: Reinstatement of laboratories performing nonwaived testing.
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