Method for non-invasive and in-vitro hemoglobin concentration me

Details Method for non-invasive and in-vitro hemoglobin concentration me Method for non-invasive and in-vitro hemoglobin concentration me

1994-01-13

1995-01-03

Sykes, Angela D.

Surgery

Truss

Pad

128664, 128665, 128666, 356 41, A61B 500

Patent

active

053776747

ABSTRACT:
A non-invasive and an in-vitro method for determining a person's hemoglobin concentration are described. The methods employ substantially simultaneous measurements of absorbance of near-infrared and long wavelength visible light. The measurement consists of a combination of ordinary absorbance data at multiple wavelengths in the form of a ratio or of a ratio of derivative absorbance data. The method minimizes the need for path-length measurement or extinction coefficient determination or estimation of scattering losses. In the in-vitro setting, the method minimizes the need for cell lysis or for reagents.

REFERENCES:
patent: 5070874 (1991-12-01), Barnes et al.
patent: 5127406 (1992-07-01), Yamaguchi
patent: 5137023 (1992-08-01), Mendelson
patent: 5183042 (1993-02-01), Harjunmaa et al.
patent: 5204532 (1993-04-01), Rosenthal

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