How can I check my egg quality? And how can IVF help me? With a simple blood test, we can check the levels of the hormone FSH and estradiol. The best day to do this test is the third day of the cycle. Another hormone that is recommended to check is AMH, which indicates ovarian reserve. AMH alone does not give a complete picture, but in combination with the other hormones and the ultrasound, can offer a better evaluation. Generally, we can check the hormones with a simple blood test.