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The optical detection of platelets in plasma
Thrombosis and Haemostasis
|July 15, 1980
Summary
This study analyzes light beam attenuation in platelet suspensions, offering methods to accurately measure platelet concentration using simple optical techniques and specific light wavelengths. Recommendations focus on instrument design and calibration for reliable results.
Area of Science:
- Biomedical Optics
- Hematology
- Plasma Physics
Background:
- Platelet aggregation in plasma affects light transmission.
- Accurate platelet concentration measurement is crucial for diagnostics.
Purpose of the Study:
- To theoretically and experimentally analyze light beam attenuation by platelet suspensions.
- To develop simple optical methods for estimating platelet concentration.
- To provide recommendations for improved instrument design.
Main Methods:
- Theoretical analysis of light attenuation.
- Experimental validation of the theoretical model.
- Identification and quantification of interfering factors.
Main Results:
- Quantified the effects of interfering and modifying inputs on light attenuation.
- Identified optimal light wavelengths (850-1000 nm) for measurement.
- Demonstrated the feasibility of using water as a blanking agent.
Conclusions:
- Simple optical methods can estimate platelet concentration with proper instrument design.
- Using near-infrared light (850-1000 nm) simplifies the procedure.
- System calibration and re-calibration are essential for accuracy.