Why do I have to scan on specific days?

The Oova algorithm will ask you to scan on specific days to capture critical days of your cycle. Specifically, we would like to capture several days before your LH surge, the LH surge, and post surge. The initial goal of the algorithm is to capture your baseline hormone levels so we can detect fluctuations in your daily levels by comparing them. If we do not have a solid idea of your baseline levels, it will be difficult to decipher the various phases of your cycle effectively.

However, if you are working with a clinician or have an alternative goal to use Oova's hormone data, you can override our algorithm by adjusting your scanning days. This can also be useful for women with irregular cycles or hormone levels. Please see Scan outside the suggested scanning window for more details.