DCP-DECARBOXY PROTHROMBIN PIVKA-II

DCP – Des-γ-carboxy Prothrombin (PIVKA-II)

What it is

The DCP (Des-γ-carboxy Prothrombin), also known as PIVKA-II (Protein Induced by Vitamin K Absence or Antagonist-II), is a blood test that measures an abnormal form of prothrombin. Normally, vitamin K is required for the proper activation of prothrombin (a clotting factor). When the process is disrupted, abnormal prothrombin (DCP/PIVKA-II) accumulates. Elevated levels are strongly associated with hepatocellular carcinoma (HCC), a common type of primary liver cancer.

Uses

This test is primarily used as a tumor marker for the detection, diagnosis, and monitoring of hepatocellular carcinoma. It is often ordered along with alpha-fetoprotein (AFP) to improve diagnostic accuracy. It is also used in monitoring treatment response and detecting recurrence in patients with known liver cancer. Additionally, it may help assess risk in patients with chronic hepatitis or cirrhosis who are at increased risk of developing HCC.

Symptoms That May Lead to the Test

Doctors may recommend this test if you have chronic liver disease, hepatitis B or C infection, cirrhosis, or symptoms such as jaundice, abdominal swelling, unexplained weight loss, loss of appetite, right upper abdominal pain, or fatigue. It is commonly used as part of liver cancer screening in high-risk patients.

Abnormal Results

Elevated DCP/PIVKA-II: Strongly suggests hepatocellular carcinoma, especially when levels are significantly higher than normal and combined with imaging results. Elevated levels may also be associated with vitamin K deficiency or use of vitamin K antagonists, though much less commonly.

Normal DCP/PIVKA-II: Suggests no evidence of liver cancer at the time of testing. However, normal results do not completely rule out early-stage disease, so results must be interpreted with imaging and clinical findings.

Risks

The test requires a standard blood draw. Risks are minimal and limited to slight pain, bruising, or dizziness at the puncture site, which typically resolve quickly.