What is the recommended sampling method when seizing very large quantities of controlled substances?

• A. Take small separate samples
• B. Take a single large sample
• C. Take no samples
• D. Take random samples

Answer: (A)

When handling a very large bulk of a controlled substance, you need a sample that truly represents what’s in the whole quantity. The material is often not perfectly uniform—there can be different additives, adulterants, or degradation in different parts of the bulk. If you rely on a single large sample taken from one spot, that sample may not reflect the rest of the lot and the analysis could misrepresent the overall composition.

Taking small, separate samples from multiple locations and depths within the bulk helps capture the variability across the entire quantity. Those increments can be tested individually or combined into a composite sample for analysis, while the rest of the bulk remains available for further testing or as evidence. This approach also supports strong chain-of-custody practices, since each small sample can be separately identified, sealed, and documented.

The other options fall short for this scenario: a single large sample is not reliably representative; taking no samples eliminates the opportunity to verify contents; and while random sampling might seem unbiased, without a systematic plan to cover different areas, it risks missing variability.