Please choose the correct ending to complete the given sentence: Health: [header] How to patch test skin [title] Understand the basics. [step] Patch tests are used to test how allergic you are when you come into contact with certain substances. Patch tests are different from prick or scratch tests.

Ending1: Unlike sting test, these tests involve using needle-probes to probe specific objects. [substeps] Prick or scratch test your skin after lifting items like clothes, while scratching can transmit certain pathogens through your skin. Ending2: [substeps] Prick means you prick your skin with a needle. Scratch is the patient's face, which is the testing location. Ending3: [substeps] A scratch test checks for reactions to common allergens that may give you symptoms from hives to a runny nose. The nurse scratches or pricks the skin to get the allergen under the skin. Ending4: These tests are more focused than lancing or laminitis tests, and therefore more effective for preventing infections than surgery. [substeps] If you come into contact with lancing, lancing, or laminitis, determine what works and what doesn't with your skin.

Answer format: ending1/ending2/ending3/ending4