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Genetic Labs

Houston, Texas

Genetic Laboratory
Baylor Genetics Laboratories
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Medical Genetics Test Details

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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.


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FISH Analysis - Langer-Giedion Syndrome Panel (EXT1 and TRPS1)
Trichorhinophalangeal Syndrome Type II | Langer | Giedion
Test Information: Confirmation of Clinical Diagnosis
Test Details
Test Code: 8430
Test Includes: For patients suspected of having LGS, the FISH-based assay utilizes two probes in order to detect the presence or absence of the EXT1 and TRPSI contiguous genes.

Special Notes: For initial screening we recommend CMA - HR (#8655).
Technical Information
Methodology: Fluorescent in Situ Hybridization (FISH) Analysis
Gene Name: EXT1, TRPS1
Protein Name: Exostosin-1, Zinc finger transcription factor TRPS1
Sample & Shipping Information
Test Requisition: Cytogenetics
Specimen Type: Blood
Requirements: Draw blood in a Sodium Heparin (green-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. Specimen should arrive in the laboratory within 48 hrs of collection. Do not heat or freeze.
Turn Around Time: 14 days
Billing Information
List Price: *For Insurance or Institutional Prices, please call.
CPT Codes: 88230x1, 88271x2, 88273x1, 88291x1


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