How would you assess Mary’s safety practice when she handled the EDTA tube?

Assessing Mary’s safety practice when handling the EDTA tube involves understanding the potential hazards associated with the use of anticoagulants, particularly in a clinical or laboratory setting. Using a shield when opening the tube is an important safety procedure to minimize the risk of exposure to aerosols or spills that could occur when the tube is opened.

EDTA tubes contain a substance that can potentially release small droplets when opened, especially if there is a sudden change in pressure or if the tube is not handled properly. A shield can help protect Mary from any accidental splashes or exposure to the contents, ensuring her safety while conducting necessary procedures.

The other options consider different aspects of safety practice, but the emphasis on using a physical barrier like a shield focuses directly on the immediate risk associated with opening the tube, making it a crucial safety measure that should not be overlooked.