Presenter: Sarah M. Brown

Pearls of Laboratory Medicine are peer-reviewed presentations focused on one specific test or disease area relevant to laboratory medicine and pathology. Pearls are one of the many free educational resources provided by the Clinical Chemistry Trainee Council (CCTC), an American Association for Clinical Chemistry (AACC) educational initiative.

If you are a resident, fellow, or trainee, join the CCTC today to access more than 100 Pearls in clinical chemistry, coagulation, hematology/hematopathology, immunology, management, microbiology, molecular diagnostics, and transfusion medicine. Registration is free, quick, and easy at