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CA19.9

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Overview 

The calculation of the CA19-9 proteins is done by a simple blood test which involves the collection of blood sample and testing the sample separately using the radioimmunoassay test.

What is CA19-9?

CA19-9 (Carbohydrate Antigen 19-9) are a type of antigen which are released by the pancreatic cells. CA19-9 proteins can be termed as tumor markers.

Why is CA19-9 suggested?

The CA19-9 test is suggested after the confirmation of pancreatic cancer, and it is performed to keep a track on the growth of the tumor.

How is CA19-9 performed?

The  CA19-9 Radioimmunoassay (RIA) is a blood test that is used to measure the CA19-9 level in the blood.

The procedure for performing the CA19-9 blood test is as follows:

  • A band is wrapped around the arm so that the vein is clearly seen.
  • The area is cleaned with 70% alcohol to avoid infection.
  • A needle is inserted into the vein, and the required amount of blood sample is collected.
  • The collected blood is transferred into a container, and the radioimmunoassay test is performed to get the results.

What are the parameters measured in CA19-9?

The parameters measured in the CA19-9 test are the range of the CA19-9 protein whose normal range is 0-37 U/mL.

An increase in the range may be an indication of a problem, and the decrease in range may be a sign of improvement in health and the effectiveness of the ongoing cancer treatment.

Preparation before performing CA19-9:

There are no special preparations needed before performing the CA19-9 test.

Post-care after CA19-9:

There are no post care measures as such after performing the CA19-9.

Sample types in CA19-9:

The increase in CA19-9 protein may be an indication of cancerous and noncancerous conditions:

  • Cancerous conditions may include an indication of colorectal, lung and gallbladder cancers.
  • Non-cancerous conditions may include Gallstones, Biliary infection, Blockage of the bile duct, Pancreatitis, Cystic fibrosis, and other Liver diseases.

Side effects/risks of CA19-9:

There are no side effects after performing the CA19-9 test.

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