Several providers offer INR
self-testing (that is, they furnish FDA-cleared handheld meters and strips, receive test results from patients, and relay results to physicians), and the services are often covered by private insurance and Medicare.
 The calculation assumes a linear relationship (increase or decrease) between consecutive INR
values to determine the proportion of time within the therapeutic range.
The primary aim of this study was to determine the knowledge of patients using warfarin concerning its use, and the effects of education on the safety of warfarin therapy on patients' knowledge levels and INR
The primary outcomes were the proportion of INR
values in range, time in therapeutic range (TTR), proportion of INR
out of range, and the number of patients with one or more out-of-range INR
In the 1990s, several reports raised concerns about the use of the INR
for monitoring oral anticoagulation in patients with APS [summarized by Della Valla, (8)], showing that assays using recombinant thromboplastin are particularly sensitive to LA interference.
The chief of the INR
Watch is its Current Intelligence Officer (CIO), Korey McLeod.
Invented by Kirkwood  in an effort to consistently record prothrombin ratios, the INR
is the ratio of patient's prothrombin time (PT) divided by the mean normal PT raised to the power of the International Sensitivity Index (ISI).
In patients with elevated INRs
, the treatment options are to stop warfarin therapy, administer oral or intravenous vitamin K, or administer intravenous fresh frozen plasma (FFP).
HEM 23290: The calculation of the INR
is appropriately adjusted for every new lot of PT reagents, changes in types of reagent, or change in instrumentation (phase II).
The mean INR
level before dicloxacillin exposure was 2.59, compared with 1.97 after dicloxacillin exposure (P <.001).
testing is similar to the way patients with diabetes test their blood sugar.
Export Value of Oral Care Products in India in INR