Key result
Prothrombin time specimens stored in polypropylene collection tubes showed no significant change in INR for up to 24 hours at room temperature or 48 hours when refrigerated.
Why the study?
Does storage in polypropylene collection tubes prevent significant changes in INR values over 24-48 hours in patients on oral anticoagulant therapy?
Population
52 patients on oral anticoagulant therapy with INRs ranging from 1.0 to 9.6.
Comparison
Storage of blood samples in polypropylene… vs Baseline INR values.
Follow-up
up to 48 hours
Authors
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Polypropylene collection tubes allow for the successful preservation of prothrombin time specimens for up to 24 hours at room temperature or 48 hours refrigerated, challenging the previous 2-hour testing limit.
Does storage in polypropylene collection tubes prevent significant changes in INR values over 24-48 hours in patients on oral anticoagulant therapy?
Polypropylene collection tubes allow for the successful preservation of prothrombin time specimens for up to 24 hours at room temperature or 48 hours refrigerated, challenging the previous 2-hour testing limit.
Ridyard et al. (1998) studied Oral anticoagulant therapy (n=52). Polypropylene collection tubes was evaluated on Change in International Normalized Ratio (INR) value. Prothrombin time specimens stored in polypropylene collection tubes showed no significant change in INR for up to 24 hours at room temperature or 48 hours when refrigerated.
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