In what type of laboratory would you send samples collected in royal blue tubes with red or lavender stripes?

• A. Pathology
• B. Clinical Chemistry
• C. Toxicology
• D. Immunology

Answer: (C)

Samples collected in royal blue tubes are specifically designated for trace element analysis and toxicology testing. These tubes are often used to collect specimens that are free from contamination by trace elements, which is particularly important in toxicology, where the presence of contaminants can lead to inaccurate results.

The red or lavender stripes on these tubes further indicate specific additives, such as a clot activator or EDTA, which are critical for certain types of testing. In toxicology, the analysis often requires precise measurements to identify drugs, heavy metals, and other substances in the blood, making the proper collection and handling of samples vital. Royal blue tubes help ensure that the results are reliable and accurate, thus making the toxicology laboratory the appropriate destination for these specimens.