For the samples tested by the SDReader, based on the 108 CF patients with available spirometry data, the level of IP-10 significantly correlated with FEV1 (r = −0.3029, P = 0.0158), FEV1/FVC (r = −0.2206, P = 0.0218), FEF (r = −0.2362, P = 0.0139), and disease severity (r = +0.2056, P = 0.0262). Here, CXCL10 is linked to cystic fibrosis.