Final answer:
Fasting specimens are preferred for the Glucose test in order to obtain accurate results, unaffected by recent food intake.
Step-by-step explanation:
Fasting specimens are preferred for the following test: Glucose.
When testing for glucose levels, fasting specimens provide a more accurate picture of a person's baseline glucose level, as it is not influenced by recent food intake. This is important in diagnosing conditions such as diabetes mellitus. Fasting for 12 to 24 hours before the test allows for more reliable and consistent results.