The general reference value of quantitative hepatitis B virus nucleic acid test is 20~500 copies/ml, and the normal value of human test should be less than the reference value. The reference value of hepatitis B virus nucleic acid quantitative testing, depending on the testing area, testing hospitals, equipment, reagents, quantitative testing standard value will be different. If a low sensitivity test is used, it may detect up to 1000 copies/ml, and if a high sensitivity test is used, it is possible to detect 10~100 copies/ml. Hepatitis B virus quantitative test results represent the amount of virus in the body, which is an important examination and monitoring index for clinical treatment. If there is a clear suspicion that there is hepatitis B virus in the blood, the high sensitivity test should be used, and the absence of it after the test can only indicate that there is no hepatitis B virus in the blood. When the test result is obviously abnormal, it is necessary to consult a doctor in time, and if it meets the indication of treatment, it is necessary to actively carry out the treatment.