Difference between revisions of "Fixation"
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| − | + | Within an hour after removal from the body,<ref>{{cite web|url=https://www.uclahealth.org/pathology/workfiles/Education/Residency%20Program/Gross%20Manual/Mastectomy%2006.03.20.pdf|title=Breast pathology grossing guidelines|website=UCLA Health|accessdate=2021-09-09}}</ref> tissue samples should generally be placed in vessels with the correct fixing solution, with a volume that allows them to lie freely in the solution.<ref name=kvast>{{cite web|url=http://www.svfp.se/foreningar/uploads/L15178/kvast/hud/Handlaggning%20av%20hudprover%20%20provtagningsanvisningar%20utskarningsprinciper%20och%20snittning%2020150325.pdf|title=Handläggning av hudprover – provtagningsanvisningar, utskärningsprinciper och snittning (Handling of skin samples - Instructions for sampling, cutting and incision|author=Katarzyna Lundmark, Krynitz, Ismini Vassilaki, Lena Mölne, Annika Ternesten Bratel|accessdate=2019-09-09|website=KVAST (Swedish Society of Pathology)}}</ref> The standard fixation fluid is generally 10% neutral buffered '''formalin''', which is roughly equivalent to 4% formaldehyde.<ref>{{cite web|url=https://microscopy.duke.edu/guides/paraformaldehyde-formaldehyde-formalin|title=Paraformaldehyde, Formadehyde and Formalin|website=Duke University|accessdate=2019-12-17}}</ref> | |
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| + | The main exception to formalin are mainly: | ||
| + | *A '''[[tophus]]''' or other specimen suspicious for gout versus pseudogout should be sent in alcohol or dry, since formalin will dissolve the crystals. | ||
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Revision as of 20:07, 9 September 2021
Author:
Mikael Häggström [note 1]
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Further reading: |
Within an hour after removal from the body,[1] tissue samples should generally be placed in vessels with the correct fixing solution, with a volume that allows them to lie freely in the solution.[2] The standard fixation fluid is generally 10% neutral buffered formalin, which is roughly equivalent to 4% formaldehyde.[3]
The main exception to formalin are mainly:
- A tophus or other specimen suspicious for gout versus pseudogout should be sent in alcohol or dry, since formalin will dissolve the crystals.
Contents
Notes
- ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Patholines:Authorship for details.
Main page
References
- ↑ . Breast pathology grossing guidelines. UCLA Health. Retrieved on 2021-09-09.
- ↑ Katarzyna Lundmark, Krynitz, Ismini Vassilaki, Lena Mölne, Annika Ternesten Bratel. Handläggning av hudprover – provtagningsanvisningar, utskärningsprinciper och snittning (Handling of skin samples - Instructions for sampling, cutting and incision. KVAST (Swedish Society of Pathology). Retrieved on 2019-09-09.
- ↑ . Paraformaldehyde, Formadehyde and Formalin. Duke University. Retrieved on 2019-12-17.
Image sources
