Isoniazid is a generic prescription drug that’s used to treat or prevent tuberculosis (TB). Isoniazid’s cost may depend on factors such as your dosage, whether you have health insurance, and the ...
Will a positive purified protein derivative (PPD) test return to normal, i.e., become nonreactive, after isoniazid treatment? —Maj. James R. Northern Sr, DO, Mexico, Mo. In an immunocompetent patient, ...
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