The MTHFR gene test, which is a test component to detect folate metabolism. Its test results can be divided into three types, namely CC type, CT type and TT type. The three test results represent three different metabolic profiles of folic acid. Testing the metabolism of folic acid can help in the diagnosis, treatment and prevention of diseases occurring due to disorders of folic acid metabolism. Women who are preparing for pregnancy and women who are in early pregnancy and who have not been able to have children properly for a long time usually need to have a genetic test for folate metabolism. A test result of CC type indicates that the activity of the enzymes required for the metabolism of folic acid in the body is very good, which is a normal test result and there is no disorder of folic acid metabolism. If the test result is CT type, it means that the enzyme activity of folate metabolism in the body of the tested person has decreased, but it can still maintain the normal folate metabolism situation, and if the test result is TT type, the folate metabolism is severely impaired.