Cherybaby. . .I am looking at my copy of Memory Notebook of Nursing: Pharmacology & Diagnostics
by Tom Gaglione, JoAnn Zerwekh, Jo Carol Claborn and C. J. Miller (Nursing Education Consultants) on page 113 and this is the information that they give (these educators have developed these tools for NCLEX review classes):
With regard to the INR, they say on page 116 that the difference between the INR and the PT is that the INR is the calculated standard and the PT is a lab value
- Normal PT range is 10-13 seconds
- For anticoagulation the PT needs to be 1.5 to 2 times the control in seconds (INR range 2.0 to 3.0)
- If PT is greater than 2.5 times the control value, OR INR is greater than 4.0, the person will have bleeding tendencies.
Hope that helps.
The people who write the questions for the NCLEX are very well aware of these differences in normal values. The questions are reviewed by a number of people before they are approved to be put on the test. They won't try to trip you up with a question that requires you to pick one normal value from a choice of values that all fall within what you could easily determine to be within a normal range. The wrong answers will stick out like sore thumbs. They will, more likely, be looking for you to know the principles behind the testing and it's significance.