Which statement correctly matches the item to its function?

Which statement correctly matches the item to its function?

• A. Refractometer — stores donor blood
• B. Blood set — counts platelets in oil-immersion fields
• C. Lancet — makes a calibrated incision on the upper lip mucosal surface
• D. Hemo-Nate syringe filter — administers blood to patients

Answer: (C)

The main idea here is matching the instrument to its typical use in obtaining or handling blood. A lancet is a small, sharp blade used to create a tiny, controlled incision in tissue to obtain a drop of capillary blood. This is standard for sampling from mucosal surfaces, like the upper lip, where a calibrated cut helps produce a reproducible blood drop. That makes it the correct match. Refractometers measure how light passes through a liquid to determine concentration of substances (like proteins or sugars), not to store donor blood. A blood set is the intravenous tubing used to deliver donor blood to a patient, so its function is administration, not performing a puncture or incision. A syringe filter like a Hemo-Nate is used to filter a solution through a syringe to remove particulates or contaminants, not to administer blood to patients.

The main idea here is matching the instrument to its typical use in obtaining or handling blood. A lancet is a small, sharp blade used to create a tiny, controlled incision in tissue to obtain a drop of capillary blood. This is standard for sampling from mucosal surfaces, like the upper lip, where a calibrated cut helps produce a reproducible blood drop. That makes it the correct match.

Refractometers measure how light passes through a liquid to determine concentration of substances (like proteins or sugars), not to store donor blood. A blood set is the intravenous tubing used to deliver donor blood to a patient, so its function is administration, not performing a puncture or incision. A syringe filter like a Hemo-Nate is used to filter a solution through a syringe to remove particulates or contaminants, not to administer blood to patients.