Table 2 Absorption coefficients of HbA1c, HbO, HHb, skin baseline, and water for the respective light wavelengths.

From: Derivation and validation of gray-box models to estimate noninvasive in-vivo percentage glycated hemoglobin using digital volume pulse waveform

Wavelength (nm)

Absorption coefficient (cm−1)

HbA1c

HbO

HHb

Skin baseline

Water

465

1276.8017

89.3958

43.4921

1.6279

0.00020277

525

1058.4641

71.8205

81.7926

1.0966

0.0003927

615

396.6405

2.7126

17.566

0.6552

0.0027167

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