Chromosome Analysis - Products of Conception
Order Name
CHROMO TX
Test Number: 0113500
Revision Date 12/10/2022
Test Number: 0113500
Revision Date 12/10/2022
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Chromosome Analysis - Products of Conception
|
Giemsa Band |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 2-4 mm(3) | Tissue | Sterile Screwtop Container | Refrigerated |
| Instructions | Specimen Type: Sterile container with sterile Ringer's lactate or Hanks' balanced salt solution or transport medium provided by the cytogenetics laboratory. Do NOT use urine containers for shipping. Specimen Storage: Refrigerate. Do NOT freeze. Specimen Collection: Aseptically obtain a small piece of tissue with subepidermal layers. Best results are obtained from placental villi, which remain viable much longer than fetal tissue. This is especially true in stillborn cases in which both cord blood and tissue samples are often not viable. If specimen is a product of conception, submit biopsies in a sterile tube with sterile Ringer's lactate, Hanks' basal salt solution, or LabCorp transport medium. Special Instructions: Please include clinical information, previous cytogenetic report, or karyotype. If prior NIPT studies have been performed, include copy of the report. Call 800-345-4363, if there any any questions. FISH from paraffin blocks can be ordered on fixed specime Specimen Stability: Ambient: Not Available, Refrigerated : Not Available, Frozen: Not Available |
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| GENERAL INFORMATION | |
|---|---|
| Expected TAT | 11 to 16 days |
| Clinical Use | Standard chromosome analysis of products of conception and fetal demise specimens to detect chromosomal causes of fetal loss. |
| Notes | Labcorp Test Code: 052052 |
| Internal Comments | Group Test this test is now being done at SFH genetic lab. 3/23/2020 changed instructions from: At least 5x5 mm section of “viable” tissue, chorionic villi, placenta, skin or cord submitted in RPMI with antibiotics or sterile Ringer’s solution using a sterile container. Please send at Room Temperature (DO NOT Refrigerate or Freeze). Frozen samples will be rejected. Specifically label the container to be used for cytogenetic testing, indicating the patient name, that it is for cytogenetic testing, and the date that it was acquired. 11/15 Updated instructions - SN |
| Service Provided By |  |
| Lab Section | Reference Lab |