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[A micro-method developed for prothrombin time assay (author's transl)]
Abstract:
Prothrombin time was measured by a newly developed micro-method using a plastic film available in the market (PARAFILM, American Can. Co.). The comparative study of this micro-method with that of Quick in rats disclosed a good correlation, with correlation coefficient of 0.951, supporting the usefulness of the method for examination of blood coagulability. The new method gave the physiological values of 9.8 sec in rabbits, 12.5 sec in dogs, 13.3 sec in mice, 14.8 sec in cats and 16.0 sec in rats, respectively. Among them, guinea pigs took the longest time of 25.3 sec for the coagulation.
Insights
A new micro-method using PARAFILM accurately measures prothrombin time in various animal models. This cost-effective technique shows high correlation with established methods, proving useful for assessing blood coagulability.
Area of Science:
- Biochemistry
- Hematology
- Veterinary Medicine
Background:
- Accurate measurement of prothrombin time (PT) is crucial for assessing blood coagulability.
- Existing methods may require significant sample volumes or specialized equipment.
- Development of micro-methods offers potential for reduced sample requirements and increased accessibility.
Purpose of the Study:
- To develop and validate a novel micro-method for determining prothrombin time.
- To evaluate the performance of this new method using readily available materials like PARAFILM.
- To compare the results with a standard method (Quick) and establish its physiological relevance across species.
Main Methods:
- A new micro-method for prothrombin time measurement was developed utilizing PARAFILM.
- The micro-method was comparatively studied against the Quick method in rats.
- Physiological prothrombin time values were determined for rabbits, dogs, mice, cats, rats, and guinea pigs using the new method.
Main Results:
- The newly developed micro-method demonstrated a strong correlation (r=0.951) with the Quick method in rats.
- The method yielded physiological prothrombin time values for multiple species, including rabbits (9.8 sec), dogs (12.5 sec), mice (13.3 sec), cats (14.8 sec), and rats (16.0 sec).
- Guinea pigs exhibited the longest prothrombin time at 25.3 sec.
Conclusions:
- The PARAFILM-based micro-method is a reliable and useful tool for assessing blood coagulability.
- This method offers a practical alternative for prothrombin time determination, particularly in resource-limited settings.
- The study provides species-specific reference ranges for prothrombin time using the novel micro-assay.