[Automatic microdetermination of serotinin in capillary blood]

Area of Science:

• Biochemistry
• Analytical Chemistry
• Neuroscience

Background:

• Serotonin (5-hydroxytryptamine) is a crucial neurotransmitter involved in various physiological processes.
• Accurate quantification of serotonin is essential for understanding neurological disorders and physiological states.
• Microsampling techniques are desirable for minimizing patient discomfort and sample volume requirements.

Purpose of the Study:

• To develop and validate an automatic fluorimetric micromethod for serotonin quantification.
• To assess the precision and sensitivity of the new method for microsamples.
• To compare serotonin levels measured in capillary blood versus venous blood.

Main Methods:

• A fluorimetric assay utilizing the condensation reaction between serotonin and orthophthaldialdehyde.
• Formation of a fluorescent compound upon reaction, enabling sensitive detection.
• Application of the method to microsamples of biological fluids, specifically blood.

Main Results:

• The developed method demonstrated high precision and sensitivity for serotonin estimation.
• Successful quantification of serotonin in microsamples.
• Identical serotonin levels were observed in both capillary and venous blood samples analyzed with this method.

Conclusions:

• The automatic fluorimetric micromethod provides a precise and sensitive means for serotonin determination in microsamples.
• The method's reliability is confirmed by its comparable results between capillary and venous blood.
• This technique offers a valuable tool for serotonin analysis, particularly when sample volume is limited.