Lab method
Chocolate agar X/V factors
Enriched media vocabulary for fastidious bacteria
CHOK-lit AG-ar
High-yield clue
Chocolate agar is enriched media; H. influenzae is tied to X and V factor vocabulary.
Overview
An enriched-media concept used to recognize organisms that need released growth factors, especially in Haemophilus teaching comparisons.
Classification
- Enriched media concept
- Fastidious organism vocabulary
Lab & identification clues
- X factor and V factor terms
- Fastidious growth concept
- Chocolate agar name does not imply food chocolate
Associations
- Haemophilus influenzae
- Neisseria species
- Respiratory organism comparisons
Commonly confused with
- Blood agar hemolysis
- MacConkey agar concept
Your notes
Original concept summary for coursework. Sources checked: OpenStax Microbiology 2e and NCBI Bookshelf Medical Microbiology; reviewed 2026-06. Describes vocabulary and interpretation concepts only; not a lab protocol and not for handling specimens or identifying patient isolates.