What exactly do ovulation kits predict?
The predictor kit measures the hormone LH. A surge in LH leads to ovulation within the next 12 hours. The egg doesn’t always get released from the ovary in spite of a surge but it is a very good marker. A positive pregnancy test around 14 days after you think ovulation occurred is the only way of establishing that it actually did. If a doctor has referred you for follicular tracking, your ovulation might be observed with ultrasound scans, but this is only done once other tests have indicated there might be a problem with ovulation. You are likely to be expected to try to conceive for around 12 months before you would be referred for testing, as the majority of women would have conceived within this time frame if they were actively trying.
