When is the start of my cycle?

The start date is the day that your menses starts (the first day you start your period). To find the mid-luteal phase, you would count to day 19, 20, or day 21 from the start date of your period.  Example: if you started your period on March 3rd, you would want to collect your sample on March 22, 23, or 24th. This is only applicable to CardioStress Plus test

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