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Addictive substances, including alcohol, cigarettes and drugs.

Understanding Louisiana’s Drug Quantity Thresholds: How Weight Determines Your Trafficking Charges

August 14, 2025Eric G. Johnson

Drug charges in Louisiana escalate dramatically based on the amount of controlled substances involved, transforming simple possession cases into serious trafficking allegations that can result in decades behind bars. Louisiana’s drug quantity thresholds create a complex legal landscape where even small differences in weight can mean the difference between a misdemeanor and a life-altering felony conviction.

At the John D. & Eric G. Johnson Law Firm, we understand how Louisiana’s drug quantity laws can turn a minor drug possession case into a major trafficking charge. Our experienced criminal defense team has successfully defended clients throughout north Louisiana against drug charges ranging from simple possession to large-scale trafficking allegations, providing the aggressive representation needed when everything is at stake.

Table of Contents

Toggle
  • Louisiana’s Drug Classification System
  • Critical Weight Thresholds for Major Drug Categories
    • Cocaine and Crack Cocaine
    • Heroin and Opioids
    • Methamphetamine
    • Marijuana
  • How Prosecutors Prove Trafficking Intent
  • Defense Strategies for Quantity-Based Charges
  • The Stakes: Understanding Trafficking Penalties
  • Protecting Your Future Against Drug Trafficking Charges

Louisiana’s Drug Classification System

Louisiana divides controlled substances into five schedules, with each category carrying different quantity thresholds for trafficking charges. Schedule I drugs like heroin and cocaine carry the most severe penalties, while Schedule V substances face lighter consequences.

The state’s approach to drug quantity thresholds differs significantly from federal guidelines. While federal cases typically require larger amounts to trigger trafficking charges, Louisiana prosecutors can pursue trafficking allegations with relatively small quantities of drugs. This means defendants often face state trafficking charges before federal authorities would even consider the case.

Understanding these thresholds becomes crucial when building a defense strategy. Prosecutors must prove beyond a reasonable doubt that the drugs weighed the amount alleged, creating opportunities for challenges to evidence collection, testing procedures, and chain of custody protocols.

Critical Weight Thresholds for Major Drug Categories

Louisiana’s trafficking thresholds vary dramatically depending on the specific controlled substance involved, with some drugs triggering serious charges at surprisingly small amounts.

Cocaine and Crack Cocaine

Louisiana’s cocaine possession laws establish trafficking thresholds at surprisingly low amounts. Possession of 28 grams or more of cocaine triggers trafficking charges, carrying potential sentences of 10 to 50 years at hard labor without parole eligibility.

Heroin and Opioids

Heroin possession charges escalate to trafficking at just 4 grams. Given heroin’s potency, this threshold can encompass what users might consider personal quantities, making trafficking charges a constant threat for individuals struggling with opioid addiction.

Methamphetamine

Methamphetamine possession laws set the trafficking threshold at 28 grams, similar to cocaine. However, law enforcement often includes the weight of cutting agents and adulterants, potentially inflating the total weight used for charging purposes.

Marijuana

Despite changing attitudes toward marijuana, Louisiana maintains strict quantity thresholds. Possession of 60 pounds or more triggers trafficking charges, though smaller amounts can still result in felony drug possession charges depending on intent to distribute.

How Prosecutors Prove Trafficking Intent

Weight alone doesn’t automatically prove trafficking intent, though it creates a strong presumption. Prosecutors typically combine quantity evidence with other factors to build their case, including packaging materials, scales, large amounts of cash, and communication records suggesting sales activity.

The prosecution must also establish the defendant’s knowledge and control over the substances. In cases involving multiple defendants or shared living spaces, proving individual responsibility for specific quantities becomes more challenging, creating potential defense opportunities.

Louisiana law allows for certain rebuttable presumptions based on quantity. When drugs exceed specific thresholds, the law presumes intent to distribute, shifting the burden to defendants to prove personal use. This legal framework makes quantity calculations absolutely critical to case outcomes.

Defense Strategies for Quantity-Based Charges

Challenging the accuracy of drug measurements represents one of the most effective defense approaches. Laboratory testing procedures, scale calibration records, and evidence handling protocols all provide potential grounds for challenging prosecution claims about drug quantities.

Chain of custody issues frequently arise in drug quantity cases. Any break in the documented handling of evidence from seizure through testing can undermine the prosecution’s ability to prove the exact amount involved. Our drug defense attorneys thoroughly examine every step of evidence handling to identify potential challenges.

Suppression motions targeting the initial search and seizure can eliminate quantity evidence entirely. If law enforcement violated Fourth Amendment protections during the investigation, courts may exclude all evidence obtained, regardless of the quantities involved.

The Stakes: Understanding Trafficking Penalties

Louisiana’s trafficking penalties reflect the seriousness with which the state treats quantity-based drug offenses. First-time trafficking convictions typically carry mandatory minimum sentences of 10 years, with maximum penalties reaching 50 years at hard labor.

Repeat offenders face even harsher consequences under Louisiana’s habitual offender laws. A second trafficking conviction can result in life imprisonment without parole eligibility, making effective legal representation absolutely essential from the moment charges are filed.

These severe penalties make quantity threshold defenses critically important. Successfully reducing charges from trafficking to simple possession can mean the difference between decades in prison and probation or minimal jail time.

Federal drug charges may also apply when cases involve interstate commerce or large quantities, creating additional complexity and potential penalties that require experienced legal guidance.

Protecting Your Future Against Drug Trafficking Charges

Louisiana’s drug quantity thresholds create serious legal jeopardy for anyone facing possession charges, with small amounts potentially triggering devastating trafficking allegations. Understanding these thresholds and the defenses available can make the difference between freedom and decades behind bars.

Eric Johnson has successfully defended clients against drug trafficking charges throughout north Louisiana, challenging quantity calculations, evidence handling, and prosecution theories in cases involving everything from personal use amounts to large-scale operations. With over 30 years of experience and deep knowledge of Louisiana’s drug laws, our firm provides the aggressive representation needed when trafficking charges threaten your future. Contact our office at (318) 377-1555 to discuss your case and learn how we can protect your rights.

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John D. & Eric G. Johnson Law Firm, LLC
Office: 318-377-1555 | Fax: 318-377-1559
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John D. & Eric G. Johnson Law Firm, LLC
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 Serving the entire State of Louisiana including Minden, Ruston, Monroe, Shreveport, Bossier City, as well as Caddo, Webster, and Ouachita parishes.
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