5
Limitations on Use
The
Clearblue® Easy
Fertility Monitor is suitable for women whose natural cycle normally lasts between 21 and 42 days. The
majority of women will need 10 Test Sticks in each cycle. However, women with irregular or long cycles (more than 35 days) may
have to use 20 Test Sticks each cycle in order to detect their most fertile time.
Certain medical conditions and medications can adversely affect the performance of the
Clearblue® Easy
Fertility Monitor. Women
who have menopausal symptoms, polycystic ovarian syndrome, impaired liver or kidney function, are pregnant or have recently
been pregnant (even if not carried to full term), may get misleading results. Similarly misleading results may be obtained by women
using antibiotics containing tetracyclines, hormonal treatments (e.g. hormonal contraception, hormone replacement therapy),
fertility treatments containing human Chorionic Gonadotrophin (hCG) or Luteinizing Hormone (LH), or any treatment that might
affect their cycle. Clomiphene citrate may elevate estrogen levels and this may result in High Fertility being declared early in the
cycle and more High Days being displayed, and in some cases the Monitor may not show Peak Fertility even when ovulation occurs.
We therefore recommend that women taking clomiphene citrate consult their doctor for advice before using the
Clearblue® Easy
Fertility Monitor. Always read the manufacturers instructions for any medication that you are taking before conducting a test.
Women who have recently been breastfeeding, using hormonal treatments (e.g. hormonal contraception, including emergency
contraception, fertility treatments, hormone replacement therapy), or any other treatment that might affect their cycle, may wish to
wait until they have at least two natural menstrual cycles in a row (each lasting 21-42 days), before using the
Clearblue® Easy
Fertility Monitor.
Women who have recently been pregnant (even if not carried to full term) may still have hCG in their bodies. HCG can adversely
affect the performance of the
Clearblue® Easy
Fertility Monitor. Therefore they are advised to wait until they have had at least two
natural menstrual cycles in a row (each lasting 21-42 days), before using the
Clearblue® Easy
Fertility Monitor.
Please speak to your doctor if you need further advice.
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