15% of Florida Medical Cannabis Patients Reported Buying Products They Believed Were Contaminated | Research

The takeaway

A survey of Florida medical cannabis patients found low contamination knowledge, 15% reported purchasing suspected contaminated products, and 25% bought products they were uncomfortable consuming.

medical cannabis regulators, patient advocates, dispensary operators, public health officials

What the researchers found

Respondents reported low knowledge of potential contaminants and lacked educational resources. 15% reported purchasing products they believed to be contaminated. 25% purchased products they were uncomfortable consuming due to quality issues. Trust was moderately higher for information from medical cannabis doctors and university researchers than state sources. Patients desired policy changes including home grow, increased testing, and pre-purchase product inspection.

Why it matters

Medical cannabis is intended for vulnerable patients who may have compromised immune systems or other health conditions. Contamination in these products poses direct health risks, and patients' low knowledge about contamination makes them especially vulnerable.

The numbers in context

Recruited from 2,000-patient registry. 15% purchased suspected contaminated products. 25% purchased products they were uncomfortable consuming. Low contamination knowledge reported. Higher trust in doctors/researchers than state information. Policy desires: home grow, more testing, pre-purchase inspection.

How the study worked

Cross-sectional survey of Florida medical cannabis patients over 21, recruited from a 2,000-patient contact registry. 24-item survey assessed experiences and perspectives on contamination, guided by the Health Belief Model framework. Hosted via Qualtrics.

What this study cannot tell us

Survey sample from a single state (Florida). Self-reported experiences and beliefs. Response rate and representativeness not fully described. Contamination was not laboratory-verified. Patient beliefs about contamination may not reflect actual contamination rates.

How to read the evidence

Single-state survey with self-reported contamination beliefs rather than laboratory verification places this at preliminary evidence.

When this study was published

Recent survey of Florida medical cannabis patients.

The bigger picture

Product quality and safety in medical cannabis programs is an underexamined issue. When patients cannot identify contaminants and programs do not adequately educate them, the therapeutic intent of medical cannabis may be undermined by safety risks.

Questions still open

What types of contaminants are most common in Florida medical cannabis products?
Would mandatory contamination education reduce patient exposure?

Common questions

Are medical cannabis products contaminated?

This study found 15% of patients believed they had purchased contaminated products, but actual contamination rates were not tested. The study highlights a gap in patient education about contamination risks.

Who do patients trust for cannabis safety information?

Patients reported moderately higher trust in medical cannabis doctors and university researchers compared to state-produced information.

Read the original research

Medical Patients' Awareness, Perspectives, and Experiences with Contaminated Cannabis.

Medical cannabis and cannabinoids, 8(1), 166-180

View on PubMed ↗Publisher’s paper ↗

Citation

Spandau, Gabriel; Loizzo, Jamie; Goodin, Amie; Bunch, James C; Stedman, Nicole; Pearson, Brian. (2025). Medical Patients' Awareness, Perspectives, and Experiences with Contaminated Cannabis.. Medical cannabis and cannabinoids, 8(1), 166-180. https://doi.org/10.1159/000546398