DNA Testing for Criminal & Civil Cases | Special Investigations Group

Forensic DNA Analysis in Support of Criminal Investigation – Austin, TX

​Special Investigations Group (SIG) provides comprehensive forensic DNA analysis services in support of criminal investigations throughout Austin and the surrounding jurisdictions. These services include the identification, collection coordination, and independent laboratory testing of biological evidence such as blood, saliva, hair, and other trace materials. SIG works in conjunction with nationally accredited forensic laboratories to ensure all DNA testing is conducted in accordance with accepted scientific standards and industry best practices. All evidence handling procedures strictly adhere to established chain-of-custody protocols to preserve the integrity and admissibility of results in criminal proceedings.

​**Call for case review and pricing
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Paternity and Maternity DNA Testing – Legal Determination of Biological Relationship

​Special Investigations Group (SIG) provides paternity and maternity DNA testing services for both legal (court-admissible) and informational (non-legal) purposes throughout Austin and surrounding areas. Legal testing is conducted under strict chain-of-custody procedures, including verified identification of all parties and specimen collection by authorized professionals, ensuring results are admissible in court for matters such as custody, child support, and probate proceedings. In contrast, basic (non-legal) testing offers a confidential and cost-effective option for individuals seeking personal knowledge without court requirements. All testing is performed in coordination with accredited laboratories, and results are delivered in a clear, professional format suitable for clients, attorneys, or judicial review when applicable.

**Call for case review and pricing **Rush results available within 24 hours (Subject to lab availability)

Special Investigations Group (SIG) also offers single Grandparentage, Full Siblingship, Half Siblingship and Avuncular DNA testing services for both legal (court-admissible) and informational (non-legal) purposes throughout Austin and surrounding areas. 
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Infidelity Investigation – Biological Evidence Testing Services

​Special Investigations Group (SIG) provides discreet infidelity DNA testing services throughout Austin and surrounding areas. Services include semen detection testing, DNA comparison testing, and contact article testing (analysis of items such as clothing, bedding, or personal effects for the presence of foreign DNA), all conducted in coordination with accredited forensic laboratories. Legal testing is performed under strict chain-of-custody protocols, including documented evidence handling and verified collection procedures, to preserve admissibility in potential court proceedings. Non-legal testing offers a confidential option for clients seeking personal answers without formal evidentiary requirements. All findings are managed with the highest level of discretion and delivered in a clear, accurate, and professionally documented format suitable for private review or legal use when applicable.

**Call for case review and pricing