Research data · Disease model and test
Formalin test in pain conditions research
From 2021 to 2025, 386 animal research papers on pain conditions mentioned the formalin test in their title or abstract.
That is 29% fewer than the 541 papers of 2011 to 2015. Between the same two periods, the papers on pain conditions that mention any of the 90 tests we count rose 10%.
Papers by year
Animal research papers on pain conditions that mention the formalin test, by year, 2001 to 2026
The 2026 bar counts papers added to PubMed by November 8, 2026.
- Papers in a full year
- 2026 so far
Show the counts for each year
| Year | Papers |
|---|---|
| 2001 | 64 |
| 2002 | 35 |
| 2003 | 69 |
| 2004 | 60 |
| 2005 | 81 |
| 2006 | 85 |
| 2007 | 78 |
| 2008 | 79 |
| 2009 | 103 |
| 2010 | 126 |
| 2011 | 105 |
| 2012 | 109 |
| 2013 | 102 |
| 2014 | 122 |
| 2015 | 103 |
| 2016 | 94 |
| 2017 | 90 |
| 2018 | 69 |
| 2019 | 81 |
| 2020 | 104 |
| 2021 | 94 |
| 2022 | 94 |
| 2023 | 62 |
| 2024 | 76 |
| 2025 | 60 |
| 2026 (part year) | 62 |
Which species the papers used
Each bar is a share of the 386 papers from 2021 to 2025. A paper can use more than one species, so the shares can add to more than 100%.
Species
“Other animals” counts papers that use none of the species this chart names.
Tests mentioned alongside the formalin test
Each bar is one test, with how many of the 386 papers also mention it, and what share that is. Of these papers, 182 (47%) mention no other test.
The 12 tests these papers mention most
Which papers count
A paper counts here when it is animal research, mentions the formalin test in its title or abstract, and studies pain conditions.
We tell whether a paper studies pain conditions from its MeSH terms, the subject headings the National Library of Medicine adds when it indexes a paper. For a paper without MeSH terms, PubTator 3, NCBI's text-mining service, has to find the disease in the title or abstract. A paper can count under more than one disease model. A paper that mentions the test only in its methods is missed, so the count runs low.
The page on pain conditions research names the subject headings we count as pain conditions. Download the test list for the search terms we used for the formalin test, or the paper list for the PubMed ID of every paper behind these counts. Our main page, Behavioral tests in published research, has the full method and each source's terms of use.
More tests and disease models
Every pairing of a disease model and a test with 30 or more papers from 2021 to 2025 has a page like this one.
Papers on pain conditions that mention other tests
- Von Frey test 988 papers
- Hot plate 450 papers
- Tail flick 293 papers
- Writhing test 271 papers
- Open field 199 papers
- Hargreaves plantar test 147 papers
- Gait analysis 146 papers
- Rotarod 146 papers
- Forced swim test 136 papers
- Elevated plus maze 128 papers
- Conditioned place preference 100 papers
- Acetone test 76 papers
- Grip strength 65 papers
- Cold plate 56 papers
- Sucrose preference test 56 papers
- Treadmill running 55 papers
- Paw pressure test 52 papers
- Tail suspension test 51 papers
- Wheel running 46 papers
- Morris water maze 45 papers
- Novel object recognition 42 papers
- Self-administration 32 papers
The page on the formalin test counts all the papers that mention it, whatever they study. The page on pain conditions research ranks the tests by their papers on pain conditions.
How to cite
APA
ConductScience. (2026, November 10). Formalin test in pain conditions research [Data set]. https://conductscience.com/data/behavioral-tests/models/pain/formalin-test
BibTeX
@misc{conductscience_pain_formalin_test_2026,
author = {{ConductScience}},
title = {Formalin test in pain conditions research},
year = {2026},
month = nov,
url = {https://conductscience.com/data/behavioral-tests/models/pain/formalin-test},
note = {Data set, released November 10, 2026},
}