ABPath Combined AP/CP Primary Certification study guide
ABPath Combined AP/CP Primary Certification · Work through your exam, one topic at a time.
The American Board of Pathology (ABPath) Combined Anatomic and Clinical Pathology (AP/CP) Primary Certification Examination is the credentialing pathway for physicians seeking board certification in both anatomic and clinical pathology. According to ABPath, candidates take two separate one-day, computer-based components, each composed of combined written and practical sections. The ABPath Combined AP/CP Primary Certification study guide has 5 sections and about 1,496 words.
01Blood Banking and Transfusion Medicine
Pretransfusion testing rests on three pillars: unambiguous patient identification, accurate ABO/RhD typing confirmed by a reverse (serum) grouping, and detection of clinically significant alloantibodies by antibody screen, identification, and antigen-negative crossmatch. Understand the immunogenicity hierarchy (D K c E Jka Fya), which predicts what a newly formed antibody is likely to be, and the concept of dosage, in which homozygous cells express more antigen and heterozygous cells can lead to an antibody being falsely ruled out.
324 words, about 2 min02Chemical Pathology and Immunopathology/Serology
Interpret every result against a reference interval generated in a comparable population with the same method, and remember that preanalytical error, analytical interference (hemolysis, icterus, lipemia), and immunoassay artifacts explain more abnormal results than rare disease. Core concepts: anion and osmolal gaps; the distinction between measured (freezing-point) and calculated osmolality; the albumin-corrected anion gap (add 2.5 mmol/L per 1 g/dL albumin below 4.0); eGFR with cystatin C confirmation when muscle mass is atypical; cardiac troponin kinetics and serial delta values; and HbA1c caveats (hemolysis, hemoglobin variants, iron deficiency, recent transfusion, renal failure).
310 words, about 2 min03Hematopathology
Hematopathology questions usually begin with a CBC and require reasoning from morphology, immunophenotype, and genetics simultaneously. Master the anemia algorithm: MCV plus reticulocyte count first, then iron studies (ferritin is an acute-phase reactant; soluble transferrin receptor helps when inflammation confounds), then hemoglobin analysis (elevated HbA2 supports beta-thalassemia trait, but iron deficiency can normalize it).
279 words, about 1 min04Medical Microbiology
Microbiology questions test whether you can separate colonization from infection and select the test that answers the clinical question. Begin with specimen quality: an acceptable sputum Gram stain shows many neutrophils and few squamous epithelial cells, and a mixed-flora urine from a bag collection is uninterpretable.
285 words, about 1 min05Laboratory Management
Laboratory management questions blend regulatory knowledge with operational judgment. Know the framework: CLIA defines test complexity (waived, moderate, high) and requires a certificate, director qualifications, survey, proficiency testing for regulated analytes, and competency assessment (semiannual in the first year, annual thereafter).
298 words, about 1 min