Based on the fold changes and the correlations with TB pathogenesis, we selected serum albumin (ALB, P02768, fold change = 8.11, P < 0.05), Rho GDP-dissociation inhibitor 2 (ARHGDIB, P52566, fold change = 0.28, P < 0.05), complement C3 (C3, P01024, fold change = 0.40, P < 0.05), ficolin-2 (FCN2, Q15485, fold change = 0.56, P < 0.05), and apolipoprotein (a) (LPA, P08519, fold change = 3.98, P < 0.05) for further verification. The gene discussed is LPA; the disease is tuberculosis.