Hepatitis B DNA quantification is less than 100IU/ml means that Hepatitis B DNA is lower than the normal value level, which indicates that the replication level of Hepatitis B virus is lower and slower. It is recommended to have a checkup in the hospital and have the relevant condition diagnosed by a professional doctor. Hepatitis B virus DNA is the core substance of hepatitis B virus, and it is also the basic symbol of the replication of hepatitis B virus. The normal range of hepatitis B DNA is 100IU/ml, below this value indicates that the hepatitis B virus is less infectious or not infectious, but does not represent the replication of the hepatitis B virus. Hepatitis B DNA testing can provide a basis for how effective anti-hepatitis B virus treatment is. If people are on anti-hepatitis B virus treatment, the hepatitis B DNA test should not be used as the only reference for treatment, but needs to be supplemented with liver function and ultrasound to make a determination. Hepatitis B DNA needs to be retested 1 or 2 times a year if the monitoring is below normal.