Intradermal testing: The volume of solution injected is 0.05mL. The disposable 0.5mL syringe with 27 gauge needle tip will be inserted at a 30 degree angle into the superficial skin layers. The solution will be injected maintaining steady pressure on the plunger until the volume is completely injected and the needle withdrawn. A distinct injection bleb should be observed. If leakage around the needle, an indistinct bleb or a subcutaneous injection occurs, then the test should be repeated at a different site. A tiny drop of extract at the injection site is common and will not affect test results.