Fig. 4
From: Serum and plasma as a good candidates of body fluids for detection lung cancer by FTIR liquid biopsy

ROC curves of FTIR based on the Y values of the spectral range (a) 800 cm− 1 − 1800 cm− 1, and (b) 2800 cm− 1 – 3000 cm− 1 where blue and red lines originate from plasma and serum samples, respectively.