The Annals of Pharmacotherapy: This review article compiles data from articles, textbooks and studies from the past 40 years to provide a comprehensive look at home ovulation prediction and pregnancy tests.
Medscape.com: This in-depth clinical review describes various ovulation testing methods and how they work.
ConsumerReports.org: Editors of ConsumerReports.org evaluate both pregnancy tests and ovulation test kits in this informative report.
Fertility and Sterility: This scientific study looked at the effectiveness of the Clearblue Easy Fertility Monitor (CEFM) in helping couples to conceive.
Human Reproduction: This study evaluates the ability of the ClearPlan Easy Fertility Monitor, now known as Clearblue, to determine ovulation when compared with hormone measurements and vaginal ultrasound scans.
Contraception: This study compares the fertile phase of the menstrual cycle as estimated by the Clearplan Easy Fertility Monitor, now Clearblue, and self-assessment of cervical mucus.
The University of Montana: Studies quoted by Genine Thormahlen, a doctor of pharmacy at the University of Montana, find that results from the Clearblue Easy Fertility Monitor coincide with estrogen and LH laboratory measurements.
JustMommies.com: This website details five fertility gadgets on the market: the Clearblue Easy Fertility Monitor, the OvaCue Fertility Monitor, Maybe Mom Mini Ovulation Microscope, the OV Watch and the Optimus Petit Sophia Fertility Monitor.
About.com: Robin Elise Weiss, About.com's pregnancy guide, used the Clearblue Easy Fertility Monitor to successfully conceive her own child.
Amazon.com: A quick search of ovulation tests at Amazon.com brings up several ovulation kits, pregnancy tests and fertility remedies.
Drugstore.com: The Clearblue Easy Fertility Monitor is the ovulation test reviewed most often, and it receives a rating of 4.5 out of 5 stars.
Diapers.com: The Clearblue Easy Fertility Monitor is one of the most reviewed products on this site, and it receives 4.6 out of a possible 5 stars.
FertilityForums.com: This forum is a bit cumbersome to search through but may be a great support for those trying to conceive.