# PubMed record PMID 1981209

> PeptideScanner retained PubMed bibliographic metadata for PMID 1981209 at 2026-07-30T21:56:47.782Z. PubMed recorded a metadata revision date of 2013-11-21 and an Entrez history date of 1990-11-01. PeptideScanner associated this retained record with the identity slug leuprolide. These dates describe PubMed metadata history, not the article's original publication date.

- Evidence object: `story:pubmed-pmid-1981209-leuprolide:v1`
- Evidence domain: Literature metadata
- Date in source: 2013-11-21
- Source checked: 2026-07-30
- Published by PeptideScanner: 2026-08-12
- Story landing page: https://peptidescanner.com/stories/pubmed-pmid-1981209-leuprolide/
- JSON record: https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-1981209-leuprolide-v1.json
- Content SHA-256: `f8646d047434b91c0f3b9832b59bef487082ebedfccfdf0cfcfca54050b47884`

## Claims and source pins

### Headline

PubMed record PMID 1981209 ([`pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809`](#source-pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809))

### Summary

PeptideScanner retained PubMed bibliographic metadata for PMID 1981209 at 2026-07-30T21:56:47.782Z. PubMed recorded a metadata revision date of 2013-11-21 and an Entrez history date of 1990-11-01. PeptideScanner associated this retained record with the identity slug leuprolide. These dates describe PubMed metadata history, not the article's original publication date. ([`pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809`](#source-pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809))

### Paragraph 1

PeptideScanner retained PubMed bibliographic metadata for PMID 1981209 at 2026-07-30T21:56:47.782Z. PubMed recorded a metadata revision date of 2013-11-21 and an Entrez history date of 1990-11-01. PeptideScanner associated this retained record with the identity slug leuprolide. These dates describe PubMed metadata history, not the article's original publication date. ([`pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809`](#source-pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809))

### Paragraph 2

This page reports retained PubMed bibliographic metadata. It does not summarize the article, establish the article's publication date, or assert safety, efficacy, or scientific truth. ([`pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809`](#source-pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809))

## Sources

<a id="source-pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809"></a>
- **PubMed record PMID 1981209 · retained source version 1:2013-11-21:current:24775ba4f8092d5764ee78d870d33a8d2910d80e340703ef64ff4bdbb83a307c** — PubMed; class A. [Open source](https://pubmed.ncbi.nlm.nih.gov/1981209/) (`pubmed-observation-pmid-1981209-2013-11-21-24775ba4f809`)

## Correction lineage

No correction is recorded for this version.

## Reporting boundaries and unknowns

PeptideScanner reproduces bounded bibliographic metadata attributed to PubMed. It does not summarize or endorse the article's findings.

- Sources outside the selected public PeptideScanner bundle may exist and are not represented by this object.
- This object does not determine whether cited records agree, corroborate one another, or establish scientific truth.
- This object does not determine safety, efficacy, causality, or suitability for any person.

Methodology: https://peptidescanner.com/methodology/
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## Suggested citation

PeptideScanner. "PubMed record PMID 1981209." Version 1, published 2026-08-12. https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-1981209-leuprolide-v1.json SHA-256: f8646d047434b91c0f3b9832b59bef487082ebedfccfdf0cfcfca54050b47884.