How many follicle tests are there? How should IVF be tested?

IVF has a natural cycle and artificial cycle, many patients in the natural cycle of IVF treatment, you need to monitor their own ovulation, in general, follicle detection methods are as follows:

1. Measure basal body temperature

Because hormones have a regulatory effect on body temperature, women with normal ovulation have a low basal body temperature in the first half of the menstrual cycle, and are even lower when they reach the ovulation period, and the basal body temperature will rise by about 0.5 degrees Celsius after ovulation (the basal body temperature rises within 3 days as a fertile period).

If you can insist on measuring and recording your body temperature every day, you will find out after a week that the fluctuation of body temperature can determine whether to ovulate, and the corresponding time of the bottom body temperature is the time of ovulation. However, the requirements of this method are also relatively high, and it is more prone to errors

2. Test strip test

The principle of action of ovulation test strips is similar to that of early pregnancy test strips, and they are all determined by measuring hormone levels to determine whether they ovulation or not. In the 24-48 hours before ovulation in women, there will be a high peak of luteinizing hormone (LH) in the urine, and the test strip detects the level of luteinizing hormone, which is more convenient to operate.

Ovulation test strip tests are generally accurate, with an accuracy rate of 75%. However, because the test strip usually does not react to simple "yes" and "no" situations, it is often difficult for women to explain some boundary situations.

3. B-ultrasound monitoring

Ultrasound monitoring is the most accurate, equivalent to the above basal body temperature monitoring, hormone measurement, etc., ultrasound monitoring can intuitively monitor the location, number and development of dominant follicles, and even further indicate the maturity of follicles and ovulation, the most accurate. The transvaginal B ultrasound is more accurate than the abdominal B ultrasound.

Compared to abdominal B ultrasound, the transvaginal B ultrasound's high-resolution vaginal probe is in almost direct contact with the organ being examined, close to the cervix and the fornix. This has several benefits: no need to hold urine to fill the bladder; no interference from gas in the intestinal lumen; and no attenuation of abdominal wall sound waves.

In this way, the imaging of the pelvic organs is clearer, especially convenient for the observation of the endometrium and ovaries, and this is also the top priority of ovulation monitoring: the ovulation situation can be measured in the above ways, but in the IVF process, B ultrasound monitoring is usually used to understand the development size of the follicle, whether it is mature, and to determine when to break the egg needle, so that the egg can be accurately retrieved.