In performing quality control on FDG, what characteristic confirms the absence of contamination?

In the context of performing quality control on Fluorodeoxyglucose (FDG), the key characteristic that confirms the absence of contamination is a clear liquid that is free of particles. A clear solution indicates that there are no particulates or impurities that could interfere with the results or the safe administration of the radiopharmaceutical.

Contamination can lead to adverse effects on image quality and patient safety. Therefore, ensuring that the FDG is free from cloudiness and physical particles is crucial. A clear appearance suggests that the radiopharmaceutical has been properly handled, stored, and prepared, which is essential for maintaining its integrity and effectiveness.

Cloudiness in solution, the presence of particles, and color variability are indicators of potential contamination or degradation of the product, which could compromise its utility in a clinical setting. Thus, the clarity and absence of visible particles serve as fundamental quality control parameters in assessing the suitability of FDG for clinical use.