Ovulation Test FAQs
Ovulation Predictors >> Ovulation Test FAQs
Luteinizing hormone in elevated
quantities causes ovulation. During most of your menstrual cycle, only a small
amount of LH is made. But in the middle of the cycle, LH briefly and dramatically
surges to facilitate the release of the ovum from the ovary. This increase is
called the "LH surge" and precedes ovulation. Conception is most likely
to occur within thirty-six hours following the LH surge. If you are trying to
conceive, then knowing when the surge of lh takes place will help you pinpoint
when you have the highest chances of getting pregnant.
do I interpret OPK results? Are lh tests the same as hCG pregnancy tests?
Ovulation tests function
differently than hCG tests. A positive result on an ovulation test (indicating
an LH Surge) is indicated by a test band that is of equal or greater intensity
(equal or darker) than the control band. A negative result for the LH Surge
is indicated when the test band is of lesser intensity (lighter) than the control
band or cannot be seen. With a pregnancy test, you are simply looking for the
presence of a test line (not faintness or degree of intensity).
is the best time of day to take the ovulation test?
Unlike the pregnancy test kit, morning (first morning urine) is not the best time to collect samples for
ovulation tests, as LH is synthesized in your body in the morning and will not
appear in your urine until the afternoon. The ideal time to collect a urine
sample is in the afternoon, though testing may safely take place from 10am to
I take the test the same time every day?
Yes: To optimize accuracy
of results, test at the same time each day. Reduce your liquid intake around
2 hours before testing as a diluted liquid sample can hinder detection of the
long after my LH surge will ovulation take place?
Generally, ovulation will
take place 12-48 hours after the LH surge is first detected (using afternoon
urine samples), though 36 hours is considered to be the average length of time
following the LH surge. Once you get a positive, you know you are at peak fertility.
Timing intercourse will increase your odds of conception.
I get a positive result, when is the best time to have sex?
To increase the chance
of conceiving, it is recommended to time intercourse the day of the LH surge
as well as following three days after.
the appearance of faint 'test band' indicate an LH surge?
A faint test line does
not indicate a positive result for an LH surge. While the presence of a faint
line on a pregnancy test may indicate a positive result, a faint line on an
ovulation test, it is always negative.
taking my basal body temperature tell me the same thing as an OPK?
Basal Body Temperature only tells of your LH surge after it
is over. That is why the BBT method cannot predict the LH surge. Ovulation tests
will tell you - with pinpoint accuracy - when your chances for conception are
OPKs be used as contraception devices?
Ovulation tests are designed to help facilitate pregnancy.
They are not recommended for contraception.
clomid interfere with test results or cause false positives?
Clomid may cause a false
positive result if you begin testing for ovulation too early in your menstrual
cycle. Please consult with your doctor about how to use OPKs in conjunction
with Clomid - or other fertility and prescription medications.
a light test line and a dark control line indicate a positive result?
Ovulation tests are not
the same as pregnancy tests - especially when it comes to interpreting results.
The results are only positive if the test line is equal to or darker than the
control line. Do not try to second guess an ovulation test. While a faint test
line may indicate that the lh surge has started, it may also simply be the result
of naturally low levels of LH that may be in your system normally throughout
Q: I had
a positive result yesterday and today. Does that mean there is something wrong?
Some women experience 2
and more rarely 3 days of an lh surge. Such results may indicate that your the
tests detected the LH Surge on the way up (lh increase) and again on the way
down again (lh surge decrease).
if I experience a BBT thermal shift but the ovulation tests failed to detect
my LH Surge?
It is possible to miss the surge. If you have a test line that
is fairly dark one day then very light the next, you may have missed the actual
surge. If your thermal shift occurs, you probably ovulated. It may be a good
idea to test twice a day when you feel that you are close to ovulating. Another
possibility is that you didn't hold your urine long enough (resulting in a diluted
Other Notes from the
1) Should I restrict my
diet before taking the test?
No, diet will not affect the test results.
2) Does alcohol, aspirin,
or any other common drug affect the test?
No, but some hormonal medications can interfere with test results. If such medications
are being taken or are suspected, seek professional advice from a physician
to confirm the test results.
3) Should the test be used
No, the test is not designed to prevent or help prevent conception and should
not be used to do so.
4) Why is first morning
urine not a good sample?
If first morning urine is used with the test, the first day of the LH surge
may not be detected. The best time to collect the urine is between 10:00 A.M.
and 8:00 P.M.. Always try to collect it at about the same time each day.
5) Today's control band
is a different shade of red than yesterday's control band. Is this a concern?
No. Variations in the color of the control band will not affect the test result.
Always compare the color of the test band to that of the control band of the
same device on the day the test is performed. Do not compare bands from different
6) Can test results be interpreted after ten minutes?
No. Test results must be read at 10 minutes. Though a positive result should not change for several days, a negative result may change to a false positive within minutes after the end of the testing period, which would not be an accurate reading. It is always best to read the results at the 10 minute testing period and then discard the test to avoid confusion.
7) A pink background color and vertical streaking appeared in the result area
during the testing period. Is this a concern?
No. Each urine sample will vary in its chemical makeup, as will the humidity
of the air in testing chamber (room). Such variations in physical conditions
can cause the vertical streaking and/or the pink-rose background color but will
not affect the test results. As long as the control band appears within five
minutes, the test is working properly.
Fertility Blend and
FertilAid Fertility Supplements
and Fertility Charting
Mucus and Evening Primrose Oil
Pills: from Clomid to FertilityBlend