PetriKey

Lab method

MALDI-TOF MS

Protein fingerprint ID concept

MAL-dee TOF

labidentificationmass-spectrometryproteindatabase

High-yield clue

Think protein fingerprint plus database match.

Overview

A laboratory identification concept that compares microbial protein spectra with reference databases for organism identification vocabulary.

Classification

  • Identification concept
  • Mass spectrometry vocabulary

Lab & identification clues

  • Protein spectrum vocabulary
  • Database matching concept
  • Species-level ID vocabulary

Associations

  • Modern clinical microbiology lab
  • Yeast and bacteria ID vocabulary
  • Quality database concept

Commonly confused with

  • PCR
  • 16S sequencing
  • Culture

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.

OpenStax: Microbiology 2e staining, media, and biochemical-test foundationssourceNCBI Bookshelf: Medical Microbiology diagnostic concept foundationssource