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How to interpret the results of a saliva ferning test.
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How to interpret the results of a saliva ferning test.

When a woman uses a saliva ovulation test, she can observe different crystallization patterns that she should interpret as follows:

  • Isolated spots: from the beginning of the menstrual cycle until a few days before ovulation. This is a non-fertile period.
  • Lines and small ferns: visible a few days before ovulation. Since sperm survive about 3-5 days in the female reproductive tract, pregnancy is possible in this period.
  • Defined ferns: in the period closest to ovulation. This pattern indicates the woman's most fertile time.
  • Lines and ferns fading: the ferns will become less and less defined during the postovulatory luteal phase.

However, it is advisable to perform the test daily when starting to use the saliva ovulation test, so that the woman learns to correctly recognize the different patterns.

By (embryologist), (embryologist) and (biochemist).
Last Update: 07/14/2022