How do you calculate International Normalized Ratio (INR)?

Calculate the International Normalized Ratio using the numbers above as an example 1. INR= (patient PT/MNPT)^ ISI = (15.2 s/13.1 s)^1.297=1.213. Note: Normal INR should be between 0.8 and 1.3 Low values of INR (less than 0.5 ) indicate a high risk of a clot, while high values (3 to 5) are associated with risk of bleeding.

How do you calculate simple interest per year?

simple interest = i. The rate of interest per annum is the interest for a principal of 100 at the end of one year. r:100::i:p (taking "?" as the simple interest on the principal p) i = pr/100. This is the formula you typically see in textbooks. Notice that the r here is the interest for a principal of 100 at the end of ONE YEAR.

What does INR 1.1 mean?

INR < 1.1 - the average level for a healthy person, who not currently being treated with any anticoagulation drugs; 1.1 < INR < 2.0 - an elevated level of INR, not yet sufficient to diagnose patient being treated with anticoagulation drugs.

How is PT calculated?

Protime, also known as prothrombin time or PT, is not really calculated. It is an actual time, measured in seconds in the laboratory. The scientist takes a patient's blood sample and adds a set of reagents to make the blood clot. Then they measure how long it takes. What is ISI in PT INR? ISI stands for International Sensitivity Index.