Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Methamphetamine identification in four forensic cases

C Long1, J Crifasi

  • 1Saint Louis University Medical School, Department of Pathology, Berkeley, USA.

Journal of Forensic Sciences
|July 1, 1996
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

"The System is Overwhelming and Frustrating and Discouraging": Stress and Social Support for Affected Family Carers in an Unregulated Drug Crisis.

Substance use & misuse·2026
Same author

A nomogram based on radiological features and immunoscore for predicting meningioma recurrence.

Clinical radiology·2025
Same author

[A survey on the implementation of cardiovascular surgery for congenital heart disease in China between 2017 and 2021].

Zhonghua yi xue za zhi·2024
Same author

[A study on knowledge, attitude, and vaccination behavior of herpes zoster vaccine among urban residents in selected areas of China].

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi·2023
Same author

MicroRNA-214-3p Ameliorates LPS-Induced Cardiomyocyte Injury by Inhibiting Cathepsin B.

Folia biologica·2022
Same author

Polysaccharide source altered ecological network, functional profile, and short-chain fatty acid production in a porcine gut microbiota.

Beneficial microbes·2020
Same journal

GenoEye: A machine learning-based framework for the prediction of intermediate eye color phenotypes.

Journal of forensic sciences·2026
Same journal

Sharp force trauma analysis without animal bones: A proposal for sustainable and ethical bone proxies.

Journal of forensic sciences·2026
Same journal

Absolute dating of modern paper using <sup>14</sup>C bomb peak data of the paper fibers.

Journal of forensic sciences·2026
Same journal

Forensic timeline investigation of Apple Health app on iOS.

Journal of forensic sciences·2026
Same journal

Help v. harm: How a "lookup table" for evaluating DNA evidence given activity-level propositions could lead to wrongful convictions.

Journal of forensic sciences·2026
Same journal

Correction to "Development and Evaluation of an Iodoplatinate-Based Strip-Type Kit for On-Site Drug Screening in Beverages".

Journal of forensic sciences·2026
See all related articles

Amphetamine testing can be complex. This study shows that a positive methamphetamine result does not always mean d-amphetamine is present, challenging common assumptions in drug screening.

Area of Science:

  • Forensic Toxicology
  • Analytical Chemistry
  • Pharmacology

Background:

  • Immunoassay screening is a common first step for detecting amphetamines.
  • Mass spectrometry is used for confirmation of presumptive positive results.
  • Distinguishing between different amphetamine isomers is crucial for accurate identification.

Observation:

  • Specimens positive for amphetamines via immunoassay were confirmed using mass spectrometry.
  • Absence of detectable d-amphetamine was noted in some methamphetamine-positive cases.
  • Chiral derivatization was employed for further investigation when d-amphetamine was absent.

Findings:

  • Methamphetamine can be detected without the presence of d-amphetamine.
  • The limit of detection for d-amphetamine was established at 50 ng/mL.

Related Experiment Videos

  • Chiral analysis confirmed the presence of methamphetamine independent of d-amphetamine.

    • Implications:

    • Results challenge the assumption that d-amphetamine must accompany methamphetamine.
    • Refines understanding of amphetamine metabolism and detection.
    • Impacts forensic drug testing protocols and interpretation of results.