Threshold Quantity
Definition
The weight of a controlled substance at or above which a more serious charge, higher penalty, or reverse-burden presumption is triggered. Thresholds vary by drug and by jurisdiction: India uses 'small' and 'commercial' quantities per drug; US federal sentencing uses drug-weight tables; UK sentencing guidelines use indicative quantities.
- Effect
- Triggers a higher charge, penalty tier or reverse burden
- India
- NDPS Act sets 'small' and 'commercial' quantity per drug
- US federal
- Sentencing guideline drug-weight tables set the tier
- UK
- Sentencing Council guidelines use indicative quantities
Common questions
Why does the exact weighed quantity matter so much?+
Crossing a threshold can shift a case from a possession charge with a light sentence to a trafficking charge with a mandatory minimum, so the analyst's weighing method and its documented uncertainty become a direct point of legal challenge.
Does threshold quantity mean the same thing as purity?+
No. Threshold quantity is usually the gross or net weight of the seized material, while purity is the proportion of actual controlled substance within it. Some jurisdictions weigh the mixture as seized regardless of purity; others require the pure-drug weight.
Related terms
- Chain of Custody
- The documented chronological record of who collected, handled, transferred, and examined a piece of evidence. For digital evidence, chain of custody includes...
- Chemist Certificate
- A formal written report from an accredited or government analyst stating the identity, purity, and weight of a tested substance. In many...
- Government Analyst
- Under India's NDPS Act and earlier Indian law, a scientist employed by the central or state government and designated to analyse seized...
- Representative Sample
- A portion drawn from a bulk seizure in a way that is statistically or procedurally likely to reflect the composition of the...
- Reverse-Burden Presumption
- A statutory rule that once the prosecution proves a basic fact (such as possession of a drug above a threshold weight), the...