Metabolite annotation and identification

metID

Annotate LC-MS features using accurate mass, retention time and tandem mass spectra in R.

LC-MSR packageOpen source

Overview

metID supports matching against in-house and public reference databases and can be used independently or within the TidyMass ecosystem.

What can this tool do?

Spectral-library matchingStructure-database searching

Common uses

  • Automate matching against an in-house reference library.
  • Combine mass and MS/MS evidence with retention information when available.

Scientific fit

Primary function

Metabolite annotation and identification

Data compatibility

Inputs

Feature or peak table, Mass spectra, Spectral library

Outputs

Compound list or annotations

Input formats

Other, R feature, spectral and reference database objects

Output formats

Other, R compound-annotation objects

Scope and considerations

Designed for

  • Automate matching against an in-house reference library.

Not designed for

  • Assigning the same confidence to mass-only and reference-standard matches.

Important requirements

  • R, feature or spectral data and a compatible reference database.

Considerations

  • Retention times are method-dependent; choose tolerances and report the evidence supporting each annotation.

Access and documentation

GPL-2 package; reference databases retain their own licenses.

Evidence and review

Documentation-based editorial review on 7 September 2026. Scope and limitations summarize the linked official sources; software execution and developer verification were not assessed.

Core publications

Resource papers, direct updates and tool-specific methods. Selection policy.

  1. Shen X, Wu S, Liang L, et al. metID: an R package for automatable compound annotation for LC-MS-based data. Bioinformatics 38, 568-569 (2022). doi:10.1093/bioinformatics/btab583

Related tools

Entry history

Changes to this catalogue entry, not the tool's software release history. Acceptance and editorial review are separate.

  1. 2026-09-08 · Entry update

    Audit core publications across existing tools

    View change · Entry at this revision
  2. 2026-09-07 · First committed entry

    Add 50 documented metabolomics resources

    View change · Entry at this revision

Full GitHub history