Lab method
Western blot
Protein-specific antibody detection by size
High-yield clue
Specific protein bands on a membrane strip are the classic Western blot readout, historically a confirmatory HIV antibody test.
Overview
A protein-detection concept in which proteins separated by size on a gel are transferred to a membrane and probed with antibodies, giving banding patterns used to confirm specific antibody responses.
Classification
- Immunoblot concept
- Protein electrophoresis + transfer
- Antibody probing method
- Confirmatory/qualitative
Lab & identification clues
- Proteins separated by molecular weight
- Antibody binding shown as discrete bands
- Band pattern interpreted against criteria
- Higher specificity than screening assays vocabulary
Associations
- Historical HIV confirmatory testing association
- Lyme disease antibody band-pattern study association
- Screen-then-confirm serology framing
Commonly confused with
- ELISA
- Immunofluorescence assay
Frequently asked questions
What is Western blot?
A protein-detection concept in which proteins separated by size on a gel are transferred to a membrane and probed with antibodies, giving banding patterns used to confirm specific antibody responses.
What is the high-yield clue for Western blot?
Specific protein bands on a membrane strip are the classic Western blot readout, historically a confirmatory HIV antibody test.
What is Western blot associated with?
Western blot is associated with Historical HIV confirmatory testing association, Lyme disease antibody band-pattern study association, and Screen-then-confirm serology framing.
What is Western blot commonly confused with?
Western blot is commonly confused with ELISA and Immunofluorescence assay.
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.