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[Test for detection of activated partial thromboplastin time using ellagic acid]
Klinicheskaia Laboratornaia Diagnostika
|August 25, 1999
Summary
A new method simplifies activated partial thromboplastin time (APTT) testing using plant phospholipids and ellagic acid. This sensitive assay improves detection of heparin and clotting factor deficiencies, enabling use with optic coagulometers.
Area of Science:
- Biochemistry
- Hematology
- Analytical Chemistry
Context:
- Activated partial thromboplastin time (APTT) is crucial for monitoring coagulation.
- Existing APTT reagents have limitations in sensitivity and compatibility with certain instruments.
- Need for improved diagnostic tools for coagulation disorders.
Purpose:
- To develop a simple, sensitive, and efficient method for APTT estimation.
- To create a reagent compatible with optic coagulometers.
- To enhance the detection of heparin and clotting factor deficiencies.
Summary:
- A novel APTT reagent is introduced, combining plant phospholipids (activator) and ellagic acid (contact factor).
- The assay requires only 0.025 M CaCl2 and demonstrates superior sensitivity to heparin and deficiencies in factors VIII and IX compared to kaolin-based reagents.
- The use of soluble ellagic acid facilitates application in optic coagulometers.
Impact:
- Provides a more sensitive and accessible method for APTT testing.
- Enhances diagnostic capabilities for coagulation disorders, particularly those involving heparin or factor deficiencies.
- Expands the utility of APTT testing to a wider range of laboratory instruments, including optic coagulometers.