Coagulation Tests

Coagulation Test Normal Values (CTNVs)

The normal value of CTV is 0.5 or greater. If the CTV is less than 1, then it indicates that there are some abnormal factors present in your blood. A high number means that there are many abnormal factors present in your blood. An abnormal number is not necessarily bad.

However, if the number is too low, then it may indicate that there are no abnormal factors present in your blood.

Normal values of CTV are usually measured using a blood test called Coagulation Factor Tissue Antigens (ctv). These tests measure how much antigens are present in the red cells. The higher the number, the more antigens there are in your blood. Some factors such as hemoglobin, albumin, globulin and other proteins are known to have a negative effect on the test result. Other factors like platelets and fibrinogen will increase the number of antigens in your blood.

What Is Hemoglobin?

Hemoglobin is a protein that transports oxygen around your body. Hemoglobin helps transport oxygen from your lungs into your bloodstream so that it can reach all parts of your body where it’s needed. It gives the red color to your blood.

What Are Antigens?

Antigens are substances that can cause an immune response in your body when they are inside your body. The immune response is how your body fights infection and illness. Anything foreign, like bacteria or viruses, can cause an immune response. This is sometimes called an allergic reaction. Common allergens in food include peanuts, gluten, eggs, and milk. Antigens can be found in your blood. This can cause an immune response in your body.

Normal value

A normal value should be between 0 and

1. When the number is higher than 1, it may be a sign of an underlying condition.

The higher the number, the more severe the condition may be.

What Is APTT?

The Apt test measures how long it takes for blood to clot. The test is also called the Activated Partial Thromboplastin Time test.

What Is a Platelet?

Platelets are small cell fragments that can help blood clot. When you get a cut or injury, platelets collect at the site of the injury. They then begin to clump together to seal up the damaged blood vessels and allow them to clot. This stops you from losing too much blood from an injury.

What Is Fibrinogen?

Fibrinogen is a blood protein that helps build up clots. Clots are essential to helping wounds heal and preventing excessive bleeding. Clots are also what cause stokes and heart attacks.

What Is a Prothrombin Time (PT)?

The prothrombin time measures how long it takes your blood to clot. It can be used to measure how well your blood is clotting or how long it takes for clots to form.

What Is a Partial Thromboplastin Time (PTT)?

The PTT test measures how long it takes for blood to clot. It is also known as the PTA test. The higher the number, the longer it takes for blood to clot. A low number means that blood clots quickly.

ABO Group

The ABO grouping was developed in 1900 by Karl Landsteiner. It is used to determine blood compatibility between donors and recipients for transfusions. The test identifies the antigens present on the surface of blood cells.

What Does an Antibody Do?

Antibodies are part of your immune system. They identify and neutralize foreign invaders, like viruses and bacteria. Antibodies are normally produced by your immune system in response to a specific threat like bacteria or a virus. The next time your body encounters that same threat, the antibodies react much faster and stronger. They prevent the foreign invader from starting an infection.

What Are Blood Types?

Blood types are different groups based on antigens present on the surface of blood cells. The two main blood groups are A and B. They can be subdivided into many different types based on additional antigens. Most people have either A or B blood types.

What Are Clotting Disorders?

Clotting disorders are medical conditions caused by problems with one or more of the steps involved in coagulation. Normally, a series of steps happens that ends with clots forming to seal up damaged blood vessels and prevent excessive bleeding. If any one of these steps is interrupted, it can cause excessive bleeding or hemorrhaging. Common clotting disorders include hemophilia and von Willebrand disease.

What Are the Coagulation Factors?

The coagulation factors are substances that help blood to form clots. The most important ones are factors II, VII, IX, and X. They are sometimes called the vitamin Kdependent coagulation factors. They require vitamin K to work properly.

What Are the International Normalized Ratio (INR) and Prothrombin Time (PT)?

The INR and the prothrombin time (PT) are tests that measure how long it takes for blood to clot. The INR is used to test patients taking warfarin, a drug that affects blood clotting. The normal range is 0.8 to 1.

2. The prothrombin time (PT) test measures how long it takes for blood to clot.

What Are Platelets?

Blood platelets, also called thrombocytes or thrombo cells, are important parts of your blood’s ability to clot. They aggregate at the site of tissue damage to help form clots. When you cut yourself, platelets stick together and help the blood vessel constrict and start to heal. There are between 150,000 and 350,000 platelets per microliter of human blood.

What Are Prostaglandins?

Prostaglandins are substances that are made from fat. They affect many different processes in your body, including inflammation, blood clotting, and the contraction of your uterus during and after childbirth. There are many different types of prostaglandins, which are abbreviated as PGD2, PGE1, PGI2, and so on. Different prostaglandins have different actions in the body.

Sources & references used in this article:

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Coagulation tests and platelet economy in atherosclerotic and control subjects by EA Murphy, JF Mustard – Circulation, 1962 – Am Heart Assoc

Abnormalities of blood coagulation tests in patients with cancer by RL Edwards, FR Rickles, TE Moritz… – American journal of …, 1987 –

Heparin detection by the activated coagulation time: a comparison of the sensitivity of coagulation tests and heparin assays by DJ Murray, WJ Brosnahan, B Pennell… – Journal of cardiothoracic …, 1997 – Elsevier

Evidence of normal thrombin generation in cirrhosis despite abnormal conventional coagulation tests by A Tripodi, F Salerno, V Chantarangkul, M Clerici… – …, 2005 – Wiley Online Library

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A comparative evaluation of rotation thromboelastometry and standard coagulation tests in hemodilution‐induced coagulation changes after cardiac surgery by S Ogawa, F Szlam, EP Chen, T Nishimura, H Kim… – …, 2012 – Wiley Online Library