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Updated: Jul 19, 2026

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A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering
Published on: December 7, 2016
Simple method for estimation of hemoglobin in human blood using color analysis
1Electronics and Communication Engineering Department, Sakthi Mariamman Engineering College, Thandalam, India. rangah@vsnl.com
Summary
Anemia affects women and children globally. An artificial neural network (ANN) accurately estimates hemoglobin (Hb) levels using blood sample color, offering a reliable alternative for low-resource settings.
Area of Science:
- Biomedical Engineering
- Clinical Chemistry
- Artificial Intelligence in Medicine
Background:
- Anemia is a significant global health issue, particularly affecting women and children.
- The cyanmethemoglobin method is the WHO-recommended standard for hemoglobin (Hb) measurement.
- Colorimetric methods offer approximate Hb results and are recommended by the WHO for low-resource settings, but are prone to human interpretation errors.
Purpose of the Study:
- To evaluate an artificial neural network (ANN) approach for estimating hemoglobin (Hb) levels in human blood.
- To address the limitations of subjective interpretation in color-measurement techniques for Hb estimation.
- To develop a potentially more accurate and objective method for Hb measurement in resource-limited environments.
Main Methods:
- An artificial neural network (ANN) model was developed and trained using 2007 blood samples.
- The ANN utilized color-coded values of blood samples as input.
- Hemoglobin (Hb) values, determined by the cyanmethemoglobin method, served as the desired output for training.
Main Results:
- The study demonstrated a strong correlation between the color of blood samples and their corresponding hemoglobin (Hb) levels.
- The ANN approach showed promise in accurately estimating Hb concentrations based on visual color data.
- This suggests that objective color analysis can be a viable proxy for quantitative Hb measurement.
Conclusions:
- Artificial neural networks (ANNs) can effectively estimate hemoglobin (Hb) levels by analyzing blood sample color.
- ANNs offer a potential solution to overcome human interpretation errors in color-based Hb measurement methods.
- This technology could enhance anemia diagnosis and management, especially in low-resource settings worldwide.

