skip to content »

Genetic Labs

Houston, Texas

Genetic Laboratory
Baylor Genetics Laboratories
not shown on screen

Medical Genetics Test Details

View Custom Req   |    Tests in Custom Req: 0
Search Tests: (Search by disease, test name, gene name, test code, or keyword. Return to test index.)

The American Medical Association (AMA) Current Procedural Terminology (CPT) codes and Healthcare Common Procedure Coding System (HCPCS) codes listed, are provided for informational purposes only. The codes reflect our interpretation of CPT/HCPCS coding requirements based upon AMA guidelines published annually. CPT/HCPCS codes are provided only as guidance to assist clients with billing. Baylor Genetics strongly recommends that clients confirm CPT/HCPCS codes with their Medicare Administrative Contractor (MAC) or other payer being billed, as requirements may differ. CPT coding is the sole responsibility of the billing party. Baylor Genetics assumes no responsibility for billing errors due to reliance on the CPT codes listed. Please direct any questions regarding CPT coding to the payer being billed.

Chromosomal Microarray Analysis - CytoScan HD SNP Array
Test Information: This test code (8650) should be used for NON-TUMOR samples only. To order this test on tumor samples, please see test code #9515.

Chromosomal Microarray Analysis (CytoScan HD) is a combined targeted and whole genome array designed and produced by Affymetrix. This array contains ~1,700,000 oligo probes and 750,000 SNP probes that detect copy number variations (CNVs), absence of heterozygosity (AOH), and segmental or whole chromosome uniparental isodisomy. This array covers approximately 18,000 RefSeq genes at an average of 1 probe per 3 Kb and the backbone at an average of 1 probe per 5 Kb.

This test has been validated in our laboratory on samples with known clinically relevant CNVs and AOH detected on another chromosome microarray platform. The array is designed to detect losses and gains representing all classic deletion/duplication syndromes and absence of heterozygosity (AOH). This assay will not detect low level mosaicism, balanced translocations, inversions, or point mutations that may be responsible for the clinical phenotype.

AOH less than 5 Mb in size will not be reported.
Product of Conception(POC) tests should be requested using the Cytogenetics - Products of Conception Requisition
Test Details
Test Code: 8650
Special Notes: For information regarding CMA parental studies, please review the following document titled CMA Parental Studies Policy.
Technical Information
Sample & Shipping Information
Test Requisition: Cytogenetics
Specimen Type: Blood
Requirements: Draw blood in both Sodium Heparin (green-top) tube(s) and an EDTA (purple-top) tube(s) and send 3-5 cc (Adults/Children) or 1-2 cc (Infant< 2 years).
Shipping Conditions: Ship at room temperature in an insulated container by overnight courier. Do not heat or freeze. Sample must arrive within 72 hrs.

Turn Around Time: 28 days
Billing Information
List Price: *For Insurance or Institutional Prices, please call.
CPT Codes: 81229x1

Return to test index