What is the best storage condition for feces samples?

The ideal storage condition for feces samples is freezing. This method is effective because it preserves the integrity of the sample by stopping bacterial growth and enzymatic activity, which can alter the composition of the sample over time. When samples are frozen, they can be stored for extended periods without significant degradation, ensuring that they remain suitable for analysis when later examined. This preservation is particularly crucial in forensic investigations, where the accuracy of results can depend on the sample's condition at the time of testing.

In contrast, storing feces at room temperature or even in refrigerated conditions may lead to bacterial growth and chemical changes that can compromise the sample. Temperature-controlled storage, while generally better than room temperature or refrigeration alone, still does not match the effectiveness of freezing in terms of long-term preservation. Thus, freezing is the preferred method for maintaining fecal sample viability for any subsequent forensic analysis.