For the diagnosis of Deep Vein Thrombosis, 2 tests are done together, namely Impedence Plethy smo graphy and leg scanning after injecting 125I fibri nogen. This process will lead to: (A) Increasing the positive predictive value, (B) Increasing the negative predictive value, (C) Increasing the pretest odds, (D) Increasing the specificity
Answer is B. In the given question, 2 tests - Impedence Plethysmography and leg scanning after injecting 125I fibrinogen are done together, for the diagnosis of Deep Vein Thrombosis.
Therefore these are two tests in done in parallel.