Final answer:
Using povidone-iodine for capillary specimen collection can contaminate the sample with iodine, which interferes with laboratory tests. Alcohol wipes are preferable to prevent contamination. This ensures the accuracy of diagnostic testing from the plasma obtained.
Step-by-step explanation:
When a phlebotomist uses povidone-iodine for a capillary specimen collection, the expected outcome is the contamination of the specimen with iodine, which can interfere with certain laboratory tests. Povidone-iodine, commonly known as Betadine, is an effective antiseptic for skin disinfection before procedures such as venipuncture but is not recommended for capillary blood collection due to the potential for sample contamination. Instead, alcohol wipes are commonly used to clean the area before performing a capillary stick, ensuring a clean collection site without contaminating the sample.
The collected blood may undergo various procedures such as centrifugation to acquire plasma for further analysis in a medical or clinical laboratory. Plasma is critical for a wide variety of diagnostic testing and monitoring. Hence, avoiding contamination during collection is essential for accurate laboratory results.