Noninvasive DNA three numbers are positive need to determine the significance according to the positive range, if the positive range is not more than 2.5, generally represents a low risk, if the value is 2.6~3, it means critical risk, if the value is more than 3, it represents a high risk. The normal value of non-invasive DNA is between -3 and 3. Generally, a non-invasive DNA value over 3 is considered high risk, a value between 2.6 and 3 is considered critical risk, and if the non-invasive DNA value is between -3 and 2.5, it is considered low risk. If all three non-invasive DNA values are positive and all three values are between 0 and 2.5, it means low risk. If the three positive noninvasive DNA values are between 2.6 and 3, it is considered a critical risk. In addition, usually, if all three positive values of noninvasive DNA are more than 3, it is considered to be high risk. All three positive non-invasive DNA values require medical attention to check the specific values, and the doctor will determine the specific clinical significance based on the size and range of the non-invasive DNA values.