Related Experiment Videos
[Methodology and interpretation of morphiate detection in urine samples]
Zeitschrift Fur Rechtsmedizin. Journal of Legal Medicine
|January 1, 1985
Summary
This study detected morphine in 50% of urine samples suspected of heroin use, confirmed by gas chromatography-mass spectrometry. Analysis of codeine and morphine ratios accurately differentiated heroin/morphine consumers from codeine users.
Area of Science:
- Forensic Toxicology
- Analytical Chemistry
Background:
- Urine drug screening is crucial for detecting substance abuse.
- Differentiating between heroin, morphine, and codeine use requires precise analytical methods.
Purpose of the Study:
- To evaluate the efficacy of Thin-Layer Chromatography (TLC) and gas chromatography-mass spectrometry (GC-MS) in detecting morphine and codeine in urine samples.
- To establish analytical criteria for distinguishing heroin/morphine consumption from codeine use.
Main Methods:
- TLC screening of 335 urine samples for morphine.
- Confirmation of positive results using GC-MS.
- Analysis of codeine/morphine ratios (Q) in free and conjugated forms.
Main Results:
- Morphine was detected in approximately 50% of samples.
- Morphine and codeine were found together in 66% of positive cases; morphine alone in 31%.
- A derived equation (Qf < 0.5 * sqrt(c)) demonstrated 98% certainty in identifying heroin/morphine consumption based on codeine and morphine concentrations.
Conclusions:
- GC-MS is a reliable method for confirming morphine in suspected heroin use cases.
- Codeine/morphine ratios provide a robust method for differentiating drug consumption patterns.
- The developed equation offers a highly accurate tool for forensic toxicology in identifying heroin/morphine abuse.