At the age of 43 with only 4 follicles you can do IVF but the success rate is low due to the low number of follicles. Triple IVF is an in vitro fertilization-embryo transfer technique, and its success rate is related to the number of follicles. In order to increase the success rate of the transfer, more multi-embryo transfers are carried out, and the embryo comes from the combination of sperms and eggs, and since the mating rate of the embryo is not 100%, the number of follicles is very important to the success rate of the transfer, and the number of 4 follicles is low, so the success rate is low. The quality of the follicles is also very important for IVF, and if the number of follicles is low, the quality of just the follicles can be improved, which can also increase the transfer success rate. At the age of 43 with only 4 follicles it is possible to do IVF. It is recommended that the patient under the guidance of the doctor, after completing the relevant examinations, closely monitor the hormonal changes and follicular development, and take in vitro fertilization-embryo transfer at the right time in order to improve the success rate.