Wavenumber (cm-1) Biochemical constituents Dy1y2 values for corresponding wavenumber regions 3300–900 Entire wavenumber region 16.12±3.82 to 24.13±2.91 3200–2800 Fatty acids 8.34±0.17 to 8.91±0.21 1800–1500 Proteins and peptides 7.11±0.39 to 8.56±0.48 1500–1200 Mixed region of proteins, fatty acids and phosphate compounds 7.46±0.31 to 8.81±0.69 1200–900 Carbohydrate 9.01±0.23 to 9.89±0.45

Table 2: Determining FT-IR spectral reproducibility based upon important plasma biochemical constituents.

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