Published: 3 Dec 2024

It is possible since every laboratory applies a set of methods that may affect how lab tests are performed.
This assists to identify if the test results are within normal interval range, reduced, or elevated when you are reading lab test results. Laboratories provide test reports with a reference range printed down next to each listed test result. When you are finding out how to interpret blood lab tests, it is significant to understand that the reference ranges may differ from one laboratory to another. This is something that patients historically depended upon their doctor to do for them. Each test has a different purpose, and each test has to be reviewed in the context of differences in test methodologies used by the laboratory where the test is produced. To understand what is normal for you, you must monitor these factors and be aware of how they affect your test results. If your lab test result is outside of the reference range, it does not certainly mean that something is wrong with your health status.This additional context is based on the individual's health history, hobby, lifestyle, and other aspects. Another significant consideration is differences in groups of patients that include: men, women, infants, age of person, the population norms in the country, ethnic group, and racial factor.

Levels that are abnormally high or low could indicate that you're in danger of bleeding or getting blood clots in your blood vessels. An INR is a calculation based on PT test results.
PT: 11 to 13.5 seconds
INR: 0.8 to 1.1
Activated partial thromboplastin time test
PT test determines how long it takes for a blood clot to form in a blood sample. There is no critical level for a D-dimer.
Prothrombin time (PT)/INR test
PT test determines how long it takes for a blood clot to form in a blood sample. Blood clotting tests are also used to track the health of people who take medications to reduce their risk of blood clots. Two examples of such medications are heparin and warfarin.
Doctors frequently order blood clotting tests (coagulation tests) such as:
D-dimer test
Detects D-dimer in the blood (a protein fragment formed in the body when a blood clot dissolves)
A normal D-dimer is considered 0.50
As D-dimer is a screening test, a positive D-dimer is a positive screen. An INR is a calculation based on PT test results.
A normal range is between 21 and 35 seconds.Blood clotting tests look for proteins in your blood that affect how your blood clots.