Clearblue Advanced Fertility Monitor Consumer One Cycle at Home Study

Inclusion Criteria

• Female
• Aged 18 - 45 years
• Willing to provide written informed consent to participate in the study and comply to the investigational procedures
• Naive to similar marketed products including current Clearblue fertility monitor and Persona
• Two natural cycles immediately prior to entering the study, each lasting between 21 and 42 days
• Seeking to become pregnant

Exclusion Criteria

• Unwilling to provide written informed consent to participate in the study or comply with study procedures
• Employees of SPD, Proctor & Gamble or Alere
• Have a condition that is known to be contra-indicated in pregnancy
• Usually have menstrual cycles which are shorter than 21 days or longer than 42 days
• Using or have used in their last 2 cycles, hormonal contraceptives including oral, emergency oral, implants, patches, transdermal injections, vaginal ring and progesterone intrauterine systems (IUS)
• Using or have used in the last 2 cycles, infertility medications or hormone replacement therapy containing hCG or LH
• Taking clomiphene citrate or other ovulation induction drugs
• Are using any treatment which may affect the menstrual cycle
• Have recently been pregnant, miscarried or breastfeeding
• Have been diagnosed with polycystic ovarian syndrome (PCOS)
• Are peri- or post-menopausal e.g. experiencing symptoms such as irregular menstrual periods, hot flushes, night sweats, sleep disturbances and mood swings
• Are taking antibiotics containing tetracyclines
• Have impaired liver or kidney function
• Have previously participated in a SPD 'trying to conceive' study