Table 1.

Discriminatory infrared spectral bands of dried serum with biomolecular assignments (taken from references^26,28–32).

Wavenumber region (cm−1)		Assignments
i	1700–1600	Amide I of proteins: (α-helical, β-pleated sheet, β-turns, random coils and side-chain structures), ν(C = O), ν(C-N), CNN.
ii	1480–1580	Amide II of proteins: (α-helical, β-pleated sheet, unordered conformation structures), δ(N-H), ν(C-N).
iii	1325–1380	C-H deformation: due to CH3/CH2 bending (groups in α and β anomers) of lipids and proteins.
iv	1190–1240	Asymmetric phosphate I: νas(PO2 −) of lipid phosphates.
v	1000–1140	Carbohydrates and nucleic acids: C-O, C-C stretch, C-H bend, deoxyribose/ribose DNA, RNA, νs(PO2 −).