Other Tests. Baseline Blood Tests Next you may be given a blood test to check your hormone levels (also known as baseline blood tests). Blood is drawn on day 2 or 3 of your period and the results are normally back within a few days.aseline Blood Tests Next you may be given a blood test to check your hormone levels (also known as baseline blood tests). Blood is drawn on day 2 or 3 of your period and the results are normally back within a few days.