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Plunger syringes designed for subcutaneous injection of precise low-volume doses (typically 0.25 to 2 mL) of tuberculin and/or sensitivity (allergy) tests; they may also be used for other subcutaneous injections (e.g., rubella vaccine). These syringes typically have a small-diameter, low-volume cylinder, usually 1 mL in size, that is accurately calibrated in fractions of milliliter or cubic centimeter using permanent lines on its barrel. Tuberculin/allergy syringes usually are available with short-length, very-small-gauge needles (25 to 28 gauge is typical) attached or fixed to their tip that may be either centered or eccentric with the syringe barrel.
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