Final answer:
The most appropriate way to collect small amounts of urine for frequent specific gravity and glucose testing on a 6-month-old infant is to apply a urine-collection bag to the perineal area.
Step-by-step explanation:
The most appropriate way to collect small amounts of urine for frequent specific gravity and glucose testing on a 6-month-old infant is to apply a urine-collection bag to the perineal area. By using a urine-collection bag, the urine can be collected without any contaminants from the diaper or the child's skin. Other methods such as taping a small medicine cup to the inside of the diaper or aspirating urine from cotton balls or a superabsorbent disposable diaper with a syringe may introduce contaminants or affect the accuracy of the tests.