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  5. What if I do not have a period due to birth control? How do I calculate the mid-luteal phase and know when to collect my samples?
  1. Home
  2. Knowledge Base
  3. CardioStress and CardioStress Plus
  4. What if I do not have a period due to birth control? How do I calculate the mid-luteal phase and know when to collect my samples?

What if I do not have a period due to birth control? How do I calculate the mid-luteal phase and know when to collect my samples?

If you are taking oral birth control pills, day 1 would be day 1 of a new birth control pack for the month. Then collect on days 19, 20, or 21. This is only applicable to the CardioStress Plus test

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