What is hepatitis C antibody testing?
what is hepatitis C antibody detection?
hepatitis C antibody is produced by the response of human immune cells to hepatitis C virus infection. Antibodies circulate in the blood and are often detected. Hepatitis C antibody test is to determine the existence of the previous virus by testing the existence of hepatitis C antibody, rather than testing the virus itself.
hepatitis C antibody has no protective effect on the body. If hepatitis C antibody is positive, it does not necessarily mean that you have hepatitis C. The basis for judging whether they have hepatitis C is whether the blood contains hepatitis C virus, so patients with positive hepatitis C antibody should not worry too much, but can be determined by further examination.
people who have received blood transfusion, shared syringes and non strictly sterilized dental instruments, endoscopy, invasive operation and acupuncture, shared razors, toothbrushes, unclean sexual life history, intravenous drugs, or had tattoos, eyebrows, pierced ears and other skin and mucous membrane injuries with patients with hepatitis C belong to high-risk groups, We should go to the hospital for HCV antibody test as soon as possible.
hepatitis C antibody detection negative
, hepatitis C is a viral hepatitis, and hepatitis B has many similarities with a lot of differences. The normal value of hepatitis C antibody is 1000. If the value of hepatitis C antibody is greater than 1000, it indicates that hepatitis C antibody has been positive. Therefore, the positive of hepatitis C antibody also indicates the emergence of hepatitis C virus. Hepatitis C is different from other diseases. Therefore, patients with hepatitis C should always be vigilant to prevent the deterioration of the condition.
2. Hepatitis C antibody negative generally refers to no infection with hepatitis C virus. Compared with hepatitis C antibody negative, the blood of hepatitis C antibody positive patients contains hepatitis C virus and is infectious. The incidence of hepatitis C is significantly higher than that of hepatitis C antibody negative patients.
3. We should also know about the negative hepatitis C antibody, so as to better prevent hepatitis C. Liver experts said that in the early stage of infection with hepatitis C virus, patients did not feel uncomfortable. After the incubation period of 5-12 weeks, only about a quarter of patients will have symptoms such as poor appetite, fatigue and jaundice; And most patients don’t feel anything. Moreover, it takes about 20 years after infection to develop cirrhosis. Therefore, many people do not know that they have been infected.
4. If you are negative for hepatitis C antibody, you should analyze the specific problems. If you want to know whether you are infected, the most important way is to check whether there is a virus in the blood. Virus RNA will appear in the serum of patients within a few days after acute infection, and it will exist for several months before antibody production, so the examination of virus antigen or virus RNA can help early diagnosis.
5. The reagent currently used is made of viral protein produced by hepatitis C virus gene. Therefore, it cannot be directly detected. Moreover, because the amount of hepatitis C in the blood is quite small, sometimes it can not even be measured. This does not mean that there is no hepatitis C, but that the activity of the virus was very low at that time.
hepatitis C antibody test positive
hepatitis C antibody positive can also be divided into false positive and weak positive:
1, hepatitis C antibody false positive
hepatitis C antibody false positive, hepatitis C antibody is not a protective antibody, and hepatitis C antibody positive generally indicates that it is a patient with chronic hepatitis C. However, there is a certain false positive rate of hepatitis C antibody. The false positive of hepatitis C antibody does not mean that it is a patient with chronic or acute hepatitis C. The false positive result of hepatitis C antibody is mainly caused by the influence of a variety of fibrinogen on the reagent. If HCV antibody is positive and HCV & mdash; RNA positive means hepatitis C patients, but hepatitis C virus HCV & mdash; RNA negative can not completely rule out hepatitis C, which needs to be determined according to clinical symptoms and disease development.
2. Weak positive of hepatitis C antibody
weak positive of hepatitis C antibody can be shown as follows:
(1) although the detection of hepatitis C antibody is weak positive, it does not mean that the body is infected with hepatitis C virus. At this time, it needs to be combined with other tests, such as HCV-RNA test, to accurately judge whether there is hepatitis C virus, In this way, we can judge whether the body is infected with hepatitis C virus.
(2) hepatitis C has been cured, but it shows that the hepatitis C antibody is weakly positive. This situation is because it has been infected with hepatitis C and the hepatitis C antibody has not completely disappeared. During the hepatitis C examination, it is found that the hepatitis C antibody is weakly positive. This is the situation of the existence of hepatitis C virus. It is in the past, but not now.
(3) the examinee has been infected with hepatitis C virus, but the antibody is weakly positive. At this time, it indicates that the hepatitis C virus in the patient is replicating and infectious.
is the detection of hepatitis C antibody accurate
is the detection of hepatitis C antibody accurate? The detection accuracy of hepatitis C antibody is high. Hepatitis C antibody detection requires blood sampling, but fasting is not required before the examination. In addition, hepatitis C examination has certain requirements for hospital equipment and technical water products. Therefore, patients with hepatitis C had better choose a large formal liver disease hospital.
the main basis for the diagnosis of hepatitis C is that the hepatitis C virus nucleic acid (HCV RNA) in serum is positive. If only a simple HCV antibody is positive, it means that you have been infected with HCV, but the body has cleared HCV. At this time, you only need regular follow-up observation. HCV nucleic acid can be detected in peripheral blood 1-3 weeks after HCV infection.
precautions for hepatitis C antibody testing
1. Pay attention to diet before hepatitis C antibody testing
hepatitis C patients must pay attention to their diet before hepatitis C antibody testing. It is best to choose some light and digestible food. It should be noted that patients must not drink, Those spicy and irritant foods should be strictly prohibited to avoid increasing the burden on the liver, resulting in inaccurate test results, which may affect the treatment and prognosis of patients.
2. Do not take medicine before hepatitis C antibody test
. Do not take any medicine before hepatitis C antibody test, because any medicine needs to be metabolized and detoxified by the liver after entering the human body. If you take medicine before the examination, it is likely to increase the burden on the liver, thus affecting the accuracy of the examination results.
3. There is no need to have an empty stomach before hepatitis C antibody detection
. Before hepatitis C antibody detection, there is no need to have an empty stomach eight hours in advance. You can eat some food appropriately without being too full. Otherwise, it is likely to affect the examination results and can not accurately reflect the specific condition of the patient.