Many Medical Laboratory Scientists are "generalists", skilled in most areas of the clinical laboratory. However some are specialists, qualified by unique undergraduate education or additional training to perform more complex analyses than usual within a specific field. Specialties include clinical biochemistry, hematology, coagulation, microbiology, bacteriology, toxicology, virology, parasitology, mycology, immunology, immunohematology (blood bank), histopathology, histocompatibility, cytopathology, genetics, cytogenetics, electron microscopy, and IVF labs. Medical Technologists specialty may use additional credentials, such as "SBB" (Specialist in Blood Banking) from the American Association of Blood Banks, "SM" (Specialist in Microbiology) from the American Society for Microbiology, "SC" (Specialist in Chemistry) from the American Association for Clinical Chemistry, or "SH" (Specialist in Hematology) from the American Society for Clinical Pathology (ASCP). These additional notations may be appended to the base credential, for example, "MLS(ASCP)SBB". Additional information can be found in the ASCP Procedures for Examination & Certification.