Opiate screening and quantitation in urine/blood matrices using LC-MS/MS techniques

Area of Science:

• Analytical Chemistry
• Forensic Toxicology
• Clinical Chemistry

Background:

• Opiate drug and narcotic analgesic screening presents challenges due to low levels in biological samples.
• Accurate quantification in serum, plasma, and whole blood is crucial for clinical and forensic settings.

Purpose of the Study:

• To describe a high-volume urinary screening technique for opiate drugs and narcotic analgesics.
• To detail methods for quantifying these drugs in various biological matrices.
• To highlight the application of LC-MS/MS for sensitive drug analysis.

Main Methods:

• High-volume urinary screening.
• Liquid chromatography-tandem mass spectrometry (LC-MS/MS) with electrospray ionization (ESI).
• Sample preparation including dilute and shoot and solid-phase extraction.

Main Results:

• Demonstrated a sensitive LC-MS/MS method for opiate and narcotic analgesic analysis.
• Developed methods applicable to urine, serum, plasma, and whole blood.
• Validated techniques for high-volume screening and precise quantification.

Conclusions:

• LC-MS/MS provides the necessary sensitivity for detecting low drug levels.
• The described methods are versatile for clinical toxicology, forensic analysis, and pharmacokinetic studies.
• Adaptable sample preparation techniques enhance applicability across different matrices.