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Genetic Labs

Houston, Texas

Genetic Laboratory
Medical Genetics Laboratories
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Medical Genetics Test Details

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Cancer Chromosomal Microarray Analysis - 180K CGH/SNP Array
Test Information: Cancer Chromosomal Microarray Analysis (180K CGH/SNP Array) is a combined targeted and whole genome array designed by the Cancer Cytogenomics Microarray Consortium. This array contains both oligo probes that detect copy number variations (CNVs) and SNP probes that detect loss of heterozygosity (LOH) and segmental or whole chromosome uniparental isodisomy. The average resolutions of the array are 1 Kb (large exons) to 10 Kb (cancer genomic regions) in targeted regions, and 20 Kb in backbone regions. This test can be used to detect CNVs and LOH in different cancer tissues including hematological malignancies as well as solid tumors (see "Special Notes" section).

This test has been validated in our laboratory on many cancer samples with known clinically relevant CNVs and LOH detected by chromosome analysis, FISH, and/or other chromosome microarray platforms. The array is designed to detect losses and gains representing deletions, duplications or amplifications, and LOH of cancer genome. This assay will not detect low level mosaicism, balanced translocations, inversions, or point mutations that may be responsible for the clinical phenotype.

LOH less than 10 Mb in size will not be reported.
Test Details
Test Code: 9505
Special Notes: For additional information regarding which microarray will be most appropriate for you, please visit the Cancer Microarray Guide.
Technical Information
Methodology: Chromosomal Microarray Analysis
Sample & Shipping Information
Test Requisition: Tumor Analysis
Specimen Type: Bone Marrow
Requirements: Draw bone marrow in an EDTA (purple-top) tube(s) and send 3-5 cc (Adults/Children) or 2 cc (Infant< 2 years).
Shipping Conditions: Ship at ambient temperature (18-25C/64-77F) in an insulated container by overnight courier. Specimen should arrive in the laboratory within 48 hrs of collection. Do not heat or freeze.

Specimen Type: FFPE - Slide(s)
Requirements: 10 unstained 5um FFPE slides containing adequate amounts of tumor to be analyzed with areas of tumor marked. Please include a copy of corresponding surgical pathology report.

Transport Temperature: sent at ambient temperature (18-25C/64-77F). Protect paraffin tissue from excessive heat. Ship in cooled container during summer months.

Unacceptable Conditions: No tumor in tissue. Frozen specimens and specimens fixed/processed in alternative fixatives.

Stability: Ambient: Indefinitely; Refrigerated: Acceptable.
Shipping Conditions: Ship at ambient temperature (18-25C/64-77F) in an insulated container by overnight courier. Do not heat or freeze.


Specimen Type: FFPE - Tumor Block
Requirements: Paraffin-embedded, formalin-fixed tissue block containing adequate amounts of tumor to be analyzed with areas of tumor marked. Please include a copy of corresponding surgical pathology report.

Transport Temperature: sent at ambient temperature (18-25C/64-77F). Protect paraffin tissue from excessive heat. Ship in cooled container during summer months.

Unacceptable Conditions: No tumor in tissue. Frozen specimens and specimens fixed/processed in alternative fixatives.

Stability: Ambient: Indefinitely; Refrigerated: Acceptable.
Shipping Conditions: Ship at ambient temperature (18-25C/64-77F) in an insulated container by overnight courier. Do not heat or freeze.


Specimen Type: Fresh Frozen Tissue
Requirements: 150 mg (0.5-2.0 cm3) Fresh tissue snap frozen at -20C. Store at -20C.
Shipping Conditions: Ship on minimum of 10 lbs. of dry ice in an insulated container by overnight courier.


Specimen Type: Leukemic Blood
Requirements: Draw leukemic blood in a EDTA (purple-top) tube(s) and send 3-5 cc (Adults/Children) or 2 cc (Infant<2yrs). (White count > 15,000 with at least 20% blasts).
Shipping Conditions: Ship at ambient temperature (18-25C/64-77F) in an insulated container by overnight courier. Specimen should arrive in the laboratory within 48 hrs of collection. Do not heat or freeze.

Turn Around Time: 10 - 14 days
Billing Information
List Price: *For Insurance or Institutional Prices, please call.
CPT Codes: 81406x1


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