GET /ecitmatch.fcgi
Summary: Match citations to PubMed IDs
Operation ID: ecitmatch
Auth: unknown
Operation ID: ecitmatch
Auth: unknown
Description
ECitMatch retrieves PubMed IDs (PMIDs) that correspond to a set of input citation strings.
Parameters (4)
api_key
(string, query, optional)
NCBI API key for higher rate limits
bdata
(string, query, required)
Citation strings in pipe-delimited format: journal_title|year|volume|first_page|author_name|your_key|. Multiple citations separated by carriage return (%0D).
db
(string, query, required)
Database to search (only 'pubmed' is supported)
Constraints: {'enum': ['pubmed']}
rettype
(string, query, optional)
Return type. Use 'xml' for XML output.
Constraints: {'enum': ['xml']}
Examples (3)
| Title | Type | URL | Action |
|---|---|---|---|
| Basic citation to PMID lookup | curl |
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/ecitmatch.fcgi?db=pubmed&bdata=Nature%7C2023%7C615%7C1%7CSmith%7Cref1 |
|
| Citation lookup with XML output format | curl |
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/ecitmatch.fcgi?db=pubmed&rettype=xml&bdata=Science%7C2022%7C375%7C100%7CJones%7Cref2 |
|
| Multiple citations batch lookup | curl |
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/ecitmatch.fcgi?db=pubmed&bdata=Nature%7C2023%7C615%7C1%7CSmith%7Cref1%0AScience%7C2022%7C375%7C100%7CJones%7Cref2%0ACell%7C2021%7C184%7C50%7CBrown%7Cref3 |
Probe History
Status Codes
| Time | Status | Latency | Size |
|---|---|---|---|
| 2026-03-23 10:24:49.129501 | 200 | 1147ms | |
| 2026-03-23 10:08:53.251725 | 200 | 1175ms | |
| 2026-03-23 09:07:19.001400 | 200 | 1128ms |
Response Changes
| When | Old | New |
|---|---|---|
| 2026-03-23 10:08:53.251725 | 9182a8d80e36 |
092db885387e |
| 2026-03-23 10:24:49.129501 | 092db885387e |
366bca4be299 |