Final answer:
Complications in capillary sampling can include hemolysis of the blood sample, contamination due to improper technique, fainting or syncope in the patient, and inadequate mixing of additives.
Step-by-step explanation:
The student asked which complication can arise in capillary sampling. A complication that can occur in capillary sampling is hemolysis of the blood sample. This means that the red blood cells in the sample may break apart, often as a result of rough handling or using improperly sized equipment. Another potential issue is contamination due to improper technique, such as not cleaning the site properly before puncture which can introduce bacteria into the sample. A less common but possible complication is the patient experiencing fainting or syncope, although this is more associated with venipuncture than capillary sampling. Finally, there can be an inadequate mixing of additives, which refers to not properly combining the blood with substances present in collection tubes that prevent clotting or preserve certain blood components for testing. Each of these issues can impact the quality and accuracy of blood tests.