А каких несколько моделей, многоуважаемый Acha?
Насколько я знаю, на рынке России сейчас 2 портативных коагулометра - Coaguchek XS и INRatio2. В Питере первый 33 килорубля, второй, кажется, можно найти примерно за 30. Стоимость тест-полосок одинакова.
Прямое сравнение нашел одно:
J Thromb Thrombolysis. 2008 Aug;26(1):22-30. Epub 2007 Oct 26.
A randomized trial comparing INR monitoring devices in patients with anticoagulation self-management: evaluation of a novel error-grid approach.
Hemkens LG, Hilden KM, Hartschen S, Kaiser T, Didjurgeit U, Hansen R, Bender R, Sawicki PT.
Цитата:
Abstract
BACKGROUND: In addition to the metrological quality of international normalized ratio (INR) monitoring devices used in patients' self-management of long-term anticoagulation, the effectiveness of self-monitoring with such devices has to be evaluated under real-life conditions with a focus on clinical implications. An approach to evaluate the clinical significance of inaccuracies is the error-grid analysis as already established in self-monitoring of blood glucose. Two anticoagulation monitors were compared in a real-life setting and a novel error-grid instrument for oral anticoagulation has been evaluated.
METHODS: In a randomized crossover study 16 patients performed self-management of anticoagulation using the INRatio and the CoaguChek S system. Main outcome measures were clinically relevant INR differences according to established criteria and to the error-grid approach.
RESULTS: A lower rate of clinically relevant disagreements according to Anderson's criteria was found with CoaguChek S than with INRatio without statistical significance (10.77% vs. 12.90%; P = 0.787). Using the error-grid we found principally consistent results: More measurement pairs with discrepancies of no or low clinical relevance were found with CoaguChek S, whereas with INRatio we found more differences with a moderate clinical relevance. A high rate of patients' satisfaction with both of the point of care devices was found with only marginal differences.
CONCLUSIONS: A principal appropriateness of the investigated point-of-care devices to adequately monitor the INR is shown. The error-grid is useful for comparing monitoring methods with a focus on clinical relevance under real-life conditions beyond assessing the pure metrological quality, but we emphasize that additional trials using this instrument with larger patient populations are needed to detect differences in clinically relevant disagreements.
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В общем, можно и тот, и другой. Мне кажется, лучше ориентироваться в выборе на доступность сервисного обслуживания и расходных материалов в регионе проживания.