[Determination of factor X Ag by laser immunonephelemetry]

Area of Science:

• Biochemistry
• Immunology
• Clinical Diagnostics

Background:

• Accurate quantification of X Ag factor is crucial for diagnosing liver pathologies and managing anticoagulant therapy.
• Existing immunological methods like Electroimmunodiffusion (EID) and Enzyme Linked Immuno-Sorbent Assay (ELISA) have limitations in speed and sensitivity.

Purpose of the Study:

• To propose and validate a novel laser immunonephelometry method for X Ag factor dosage.
• To evaluate the sensitivity, reproducibility, and speed of the proposed method compared to existing techniques.

Main Methods:

• Laser immunonephelometry utilizing rabbit antiserum.
• Inclusion of polyethylene glycol (PEG) and ethylenediaminetetraacetic acid (EDTA) in the assay buffer.
• Comparative analysis with Electroimmunodiffusion (EID) and Enzyme Linked Immuno-Sorbent Assay (ELISA).

Main Results:

• The laser immunonephelometry method demonstrated high sensitivity and reproducibility.
• The proposed technique was significantly faster than EID and ELISA.
• The method proved effective for detecting enzyme dysfunction and liver pathology.

Conclusions:

• Laser immunonephelometry provides a rapid, sensitive, and reproducible tool for X Ag factor quantification.
• This method is a valuable addition for diagnosing liver conditions and enzyme disorders.
• It offers supplementary information for monitoring patients on antivitamin K therapy.