Microbiology Review: Key Pathogens for the ASCP Exam

Must-Know Microbiology for the ASCP Exam

Microbiology is a core component of the ASCP board exam. This review covers the key pathogens and concepts you need to master.

Gram-Positive Cocci

Know the catalase test (Staphylococcus positive, Streptococcus negative), coagulase test (S. aureus positive), and optochin/bacitracin susceptibility patterns.

Gram-Negative Rods

Understand MacConkey agar selection, lactose fermentation, oxidase test (Pseudomonas positive, Enterobacteriaceae negative), and Enterobacteriaceae identification.

Special Organisms

Acid-fast staining for Mycobacterium, urea breath test for H. pylori, darkfield microscopy for Treponema pallidum, and serology for viral hepatitis markers.