The
information and images below have been provided by
The Fertility Shop
, and Ovulook.
The
Principle Behind Saliva Ferning
Background:
- Most
women ovulate near the middle of their monthly menstrual cycle. The
average cycle length for a woman is between 23 to 35 days. It is possible,
however, to have a longer or shorter menstrual cycle. Sometimes it
is even possible to have ovulation occur twice in one month, or to
have a month where no ovulation occurs at all. Most doctors agree
that ovulation usually happens 13 to 14 days before starting your
period or monthly bleeding.
- Each
month, as a woman, your saliva goes through changes because of different
hormones. One of these hormones is estrogen. Just prior to ovulation,
estrogen levels increase and create a distinct pattern in your dried
saliva that looks like frost on a window pane. This pattern is called
ferning.

- When
you see these patterns you will know that ovulation is likely to occur
in the next 24 to 72 hours. However you are able to see through using
this method, your estrogen levels increase daily.
It
is important to note that an estrogen surge or ovulation may not occur
in all cycles.
Results
will typically appear as shown in this image, however please note that
the results have been enhanced in black. The unit you choose may also
have a different color illumination.
The
Facts
Q:
I am trying to get pregnant. When is the best time for intercourse?
To increase
your chances of getting pregnant, it is recommended that you have intercourse
as soon as you start to see the ferning pattern begin.
Q:
Will all women’s ferns look the same?
No, because
different women produce estrogen in different amounts, each woman will
have her own unique ferning pattern.
Q:
How will I know if I am seeing ferns?
For the
first several months you use the tester, you may want to test for more
than just the fives days around ovulation. That way you will see the
different patterns that develop throughout the month and have a clearer
understanding of what your ferning patterns look like.
Q:
Will I see ferns at other times of the month other than around the time
of ovulation?
Some women
will, on occasion, see ferns at other times of the month. This is primarily
due to a second estrogen surge near the end of your cycle. This is also
why you calculate the expected time of ovulation, and look for the ferning
patterns then.
Q:
Is it all right to use my Saliva Ovulation Tester all month long?
Yes, you
may use your tester all month long. Please note the question above and
pay particular attention to the patterns that develop around the time
of expected ovulation.
Q:
Why would it be that I am not seeing any ferns?
There could
be several reasons:
- First,
make sure that you have not eaten, had anything to drink, brushed
your teeth or smoked for at least two hours prior to testing.
- Second,
be sure to swish saliva around in your mouth and gather fresh saliva
from the saliva glands under your tongue.
- Third,
you may have miscalculated the time of ovulation. Make sure you have
accurately kept track of the length of your complete menstrual cycle.
- Fourth,
your body may not be producing enough estrogen. If you think this
is the case, please consult your physician.
Q:
I am seeing ferns all the time. Why is that?
A small
percentage of women produce a high amount of estrogen all month long.
One reason could be that you might not be producing enough progesterone.
If you think this is true in your case, please consult your doctor or
health care provider.
Q:
What else could interfere with my test results?
Possible
things are: pregnancy, recent pregnancy, have reached menopause, have
just stopping taking birth control pills, or taking injections for birth
control. This would also be true if you are taking hormone replacement
therapy, such as supplemental estrogen.
Q:
How long before the fern will disappear off the slides?
If the
slides are kept in a dry environment, the slides will keep their ferning
patterns for many months.
Q
: I am trying to be come pregnant. Should I use any other types of ovulation
detection, such as a LH kit?
Although
the Saliva Predictors are very accurate, if you are trying to become
pregnant, you may use as many kinds of ovulation testing as you would
like.
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