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| Lab Section Category | |
| Indications |
This FISH test uses the LSI 1p36 / LSI 1q25 & LSI 19q13 / LSI 19p13 dual colour probe sets to detect chromosomal deletions involving the 1p36 and 19q13 regions. |
| Specimen Required |
Freshly-cut tissue sections. |
| Storage/Transport |
The FISH test is optimal with freshly-cut tissue samples. Tissue sections should preferably be between 4 - 6mm in thickness on coated/positively-charged slides. The optimal fixation time in formalin should be between 6 - 72 hours. An accompanying Hematoxylin and Eosin (H&E) stained slide with the tumour region marked out by a pathologist should be submitted together with at least 6 unstained sections. |
| Method |
Fluorescence In Situ Hybridization using direct-labelled FISH DNA probes are hybridized to target loci and analysed under fluorescence microscopy. |
| Test Results |
Findings are reported in accordance to the International System for Human Cytogenomic Nomenclature (ISCN, 2024). |
| Turnaround Time |
3 ~ 10 days |
| Day(s) Test Set up |
Monday – Saturday (office hours) |
Change History Notes
21 Oct 2025 11:40 AM
Updated test results for ISCN, 2020 to ISCN, 2024
17 May 2022 11:20 AM
Updated the test result for ISCN, 2016 to ISCN, 2020
06 Jul 2017 11:15 AM
Updated the test result for ISCN, 2013 to ISCN, 2016
16 Dec 2015 09:40 AM
Change the time in formalin from 6-48 hours to 6-72 hours
07 Dec 2015 05:20 PM
Updated Turnaround Time: 3 ~ 10 days
15 Nov 2012 09:05 AM
Updated Turnaround Time to within 10 days.
Last Updated - 21 Oct 2025
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