SWGDRUG
Definition
Scientific Working Group for the Analysis of Seized Drugs, established in 1997 by the US DEA and the Office of National Drug Control Policy (ONDCP). Publishes consensus recommendations for drug identification, including the three-category classification of analytical methods by discriminating power, now widely adopted in North America, Australia and, alongside ENFSI DWG guidance, across Europe.
- Established
- 1997 by the US DEA
- Status / auspices
- Disbanded 2018; guidelines remain normative under OSAC auspices
- Latest guidance version
- Recommended Methods Rev 8.0 (2019)
- Geographic adoption
- North America, Australia, Europe, and internationally
Common questions
What are SWGDRUG's three analytical method categories?+
Category A methods (such as GC-MS, LC-MS/MS, NMR, XRD) are confirmatory and have the highest discriminating power. Category B methods (IR, Raman, CE) are presumptive. Category C methods (color tests, TLC) are supporting. A positive drug identification must use at least one Category A method plus a method from a different technique category.
Who publishes SWGDRUG guidelines and where?+
SWGDRUG was established in 1997 by the US DEA and operates under OSAC auspices. Although the working group disbanded in 2018, its Recommended Methods (Rev 8.0, 2019) remain widely adopted in North America, Australia, and Europe.
Why does SWGDRUG require more than one analytical method?+
The orthogonal-method rule requires at least one Category A (confirmatory) method plus one method from a different technique category. This dual-technique approach ensures reliability and guards against misidentification from instrument error or interference.
Related terms
- ENFSI Drugs Working Group (DWG)
- European Network of Forensic Science Institutes Drugs Working Group. Publishes best-practice manuals for drug analysis aligned with SWGDRUG tiering principles, operates an...
- ISO/IEC 17025:2017
- The international standard specifying general requirements for the competence of testing and calibration laboratories. Covers management (document control, non-conforming work, audits) and...
- 4-Anilinopiperidine Scaffold
- The structural core conserved across fentanyl and its analogues: a piperidine ring bearing an anilide group at the 4-position. Clandestine variation at...
- 6-Monoacetylmorphine (6-MAM)
- A transient diagnostic metabolite of heroin (diacetylmorphine) formed by the rapid hydrolysis of one acetyl group. Half-life is 6 to 25 minutes...
- Alkaloid Ratio Profiling
- A source-attribution technique using the morphine:codeine:papaverine:noscapine ratio in heroin seizures to infer the geographic origin of the opium feedstock, reflecting the chemotype...
- Carfentanil
- A fentanyl analogue with a 4-carbomethoxy substituent on the piperidine ring; approximately 10,000 times the analgesic potency of morphine. Implicated in the...
- Category a Method
- An analytical method that provides the highest level of discriminating power in drug identification, generating structural or molecular fingerprint information. Category A...
- Category B Method
- An analytical method with intermediate discriminating power, measuring a characteristic but less structurally specific property. Includes UV-Vis spectroscopy, TLC, GC without MS,...
- CFSL (Central Forensic Science Laboratory)
- The network of central government forensic laboratories in India, with major units in Delhi, Kolkata, Chandigarh, and Hyderabad, operating under the Directorate...
- Class a (MDA 1971)
- The highest-penalty class under the UK Misuse of Drugs Act 1971. Includes heroin, cocaine, MDMA, LSD, fentanyl and magic mushrooms. Maximum: life...
- Commercial Quantity (NDPS)
- The upper quantity threshold under India's NDPS Act 1985 above which the maximum punishment (10 years to life) applies. Example: 250 g...
- Corrective Action and CAPA
- The ISO 17025 Clause 8.7 requirement for root-cause analysis and documented corrective and preventive action (CAPA) following any nonconformity (PT failure, IQC...
Explained in these topics
- Controlled Substances and Their Schedules: NDPS, CSA, MDA 1971 and the EU FrameScientific Working Group for the Analysis of Seized Drugs (US; guidelines remain normative and the group continues to operate under OSAC). Defines Category A,...
- Introduction and Scope of Forensic ChemistryScientific Working Group for the Analysis of Seized Drugs: a US-based body (now under OSAC auspices) that publishes identification category frameworks (A, B, C...
- ISO 17025, NABL, ENFSI and Quality Systems for Forensic Chemistry LaboratoriesScientific Working Group for the Analysis of Seized Drugs. Publishes Recommended Methods (Rev 8.0, 2019) defining Category A (confirmatory: GC-MS, LC-MS/MS, FT...
- Opioids: Heroin, Fentanyl Analogues and Prescription DiversionsScientific Working Group for the Analysis of Seized Drugs. Defines three categories of analytical methods (A: MS, NMR, XRD; B: IR, Raman, CE; C: colour tests,...
- SWGDRUG Identification Tiers and the UV / TLC / GC-MS / LC-MS/MS WorkflowScientific Working Group for the Analysis of Seized Drugs, established in 1997 by the US DEA and the Office of National Drug Control Policy (ONDCP). Publishes...