New Jersey CALA Practice Exam 2025 – Complete Prep Resource

Question: 1 / 520

How many units of tuberculin are used in a Mantoux Test?

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5

The correct answer is based on the standard procedure for administering a Mantoux test, which is used to detect tuberculosis (TB) infection. A Mantoux test typically involves intradermal injection of 0.1 mL of purified protein derivative (PPD), which contains 5 tuberculin units. This specific volume and concentration are established to create an appropriate immune response sufficient to test for the presence of TB antibodies in the body.

Understanding the significance of the Mantoux test is crucial in managing potential tuberculosis cases, especially in healthcare settings or assisted living environments where residents may be at higher risk for infection. The test's accuracy in identifying TB infections relies on the standard dosage of 5 units to ensure reliable and valid results.

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