Detection of opiates in postmortem tissues by thin-layer immunoassay.

Area of Science:

• Forensic Toxicology
• Analytical Chemistry
• Biochemistry

Background:

• Opiate detection in postmortem samples is crucial for forensic investigations.
• Existing methods may require specialized equipment or radioactive reagents.
• Accurate quantification of opiates in diverse tissues is essential.

Purpose of the Study:

• To develop and validate a simple, sensitive thin-layer immunoassay (TIA) for opiate detection.
• To assess the reliability of TIA for postmortem tissue analysis.
• To provide an alternative to existing opiate detection methods.

Main Methods:

• Tissue homogenization and ultradialysis for sample preparation.
• Thin-layer immunoassay (TIA) for opiate detection.
• Validation against radioimmunoassay (RIA) in a blind study.

Main Results:

• The developed TIA method is simple, sensitive, and requires no specialized equipment or radioactive reagents.
• The assay demonstrated reliability for opiate detection at concentrations ≥200 ng/g.
• A blind study of 83 postmortem specimens confirmed the method's efficacy.

Conclusions:

• Thin-layer immunoassay (TIA) is a suitable method for detecting opiates in postmortem tissues.
• The TIA offers a practical and sensitive approach for forensic toxicology.
• This method provides a valuable tool for postmortem opiate analysis.