Lab method
Antigen test concept
Detects microbial protein or polysaccharide target
AN-tih-jen test
High-yield clue
Antigen test looks for a pathogen component; antibody tests look for host response.
Overview
An immunologic testing concept used to distinguish antigen detection from antibody detection and nucleic-acid detection in coursework.
Classification
- Immunoassay concept
- Detection vocabulary
Lab & identification clues
- Target antigen vocabulary
- Sensitivity/specificity concepts
- Rapid-test term recognition
Associations
- Respiratory virus testing
- Cryptococcal antigen
- Giardia/Cryptosporidium antigen terms
Commonly confused with
- ELISA
- PCR
- NAAT
Frequently asked questions
What is Antigen test concept?
An immunologic testing concept used to distinguish antigen detection from antibody detection and nucleic-acid detection in coursework.
What is the high-yield clue for Antigen test concept?
Antigen test looks for a pathogen component; antibody tests look for host response.
What is Antigen test concept associated with?
Antigen test concept is associated with Respiratory virus testing, Cryptococcal antigen, and Giardia/Cryptosporidium antigen terms.
What is Antigen test concept commonly confused with?
Antigen test concept is commonly confused with ELISA, PCR, and NAAT.
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.