Final answer:
The U-100 syringe is specifically designed for insulin administration due to its capability to deliver 100 units of insulin per milliliter. Tuberculin testing requires a tuberculin type syringe, which is different from a U-100 syringe.
Step-by-step explanation:
The U-100 syringe is commonly used for administering insulin. Insulin syringes are marked with this designation because they are designed to deliver 100 units of insulin per milliliter of fluid. The tuberculin testing, which falls under the category of hypersensitivity tests, uses a different type of syringe because the purpose of this test is not to administer medication but to introduce a small amount of tuberculin under the skin to check for a reaction, indicating exposure to TB bacteria.
Tuberculin tests require precision but not necessarily the dosing calibration provided by a U-100 syringe. The Mantoux tuberculin skin test, for example, uses a small amount of tuberculin injected into the skin to test for a delayed hypersensitivity reaction, which would include redness, swelling, or hardness, especially in individuals who have had the BCG vaccine or have been exposed to TB bacteria. Allergy testing and administering chemotherapy also require accurate dosing and might use various types of syringes, but they are not specifically associated with the U-100 syringe.