Figure 2From: Serum heat shock protein 47 levels are elevated in acute interstitial pneumonia Receiver operating characteristic curve for serum levels of heat shock protein (HSP) 47 in patients with various interstitial pneumonias. Highest diagnostic accuracy cut-off level for HSP47 was 859.3Â pg/mL, which discriminated between AIP and the other IIPs studied and healthy volunteers with 100% sensitivity, 98.5% specificity, and a diagnostic accuracy of 98.7%. Use of serum HSP47 level for diagnosis of AIP resulted in the area under the curve of 1.000.Back to article page