| Deletion 19q, FISH, Glial neoplasia |
| WSLH Department: | Cytogenetics |
| WSLH Test Code: | 886F6 |
| CPT Code: | 88271x2, 88275 |
| Price: | For pricing information, please call 608-262-0402. |
| Includes: | FISH analysis of 200 cells for copy number of chromosome 19q compared to copy number of chromosome 19p |
| Methodology: | Fluorescence in situ hybridization performed on interphase nuclei from paraffin embedded tissue using DNA probes (LSI 19q13/LSI 19p13; Vysis, Inc) covering the region including the CRX, GLTSCR2 and GLTSCR1 genes in 19q13 and probes covering the region including the MAN2B1, ZNF443 and ZNF44 genes in 19p13 as an internal control |
| Availability: | Monday-Friday 7:45 AM - 4:30 PM, Saturday 7:45 AM - 12:00 PM |
| Turn-around Time: | Approximately 5-8 days, with an average of 5 days. (Reports are issued Monday-Friday 7:45 AM - 4:30 PM) |
| Recommended Uses: | Detection of relative loss of the long arm of chromosome 19. Aids in diagnosis of glial neoplasia including astrocytoma and oligodendroglioma. |
| Contraindications: | |
| Specimen Requirements: | Paraffin embedded tissue: Five 4-micron sections on immunohistochemistry slides, the middle section stained with H&E. |
| Collection Kit/Container: | |
| Patient Preparation: | |
| Collection Instructions: | FFPE tissue: Tissue specimen should be fixed in 10% neutral buffered formalin for 6-48 hours. |
| Specimen Handling and Transport: | Store and transport specimens at room temperature. |
| Unacceptable Conditions: | FFPE tissue specimen must not be de-calcified. |
| Requisition Form: | Cytogenetics Lab Neoplasia Diagnosis Form #132 |
| Required Information: | Laboratory regulations require the following minimum information to be provided on the requisition form for a specimen to be accepted for testing: Patient name or unique identifier; date and time of collection, patient date of birth and sex, specimen type/site of collection, test request(s), reason for referral, clinician name and UPIN/NPI, and address for reporting results. Please be certain that name/identifier on the form matches that on the specimen label. |
| Results include: | Ratio of 19q13 to 19p13 signals. Deletion 19q detected/not detected |
| Limitations: | |
| Additional Tests Recommended: | Test 886F5 for detection of deletion of 1p. |
| Additional Comments: | |
| Additional Tests Performed: | |
