Skip to content

    Health & Pregnancy

    Font Size

    Your Best Days for Making a Baby

    Ovulation Predictor Kits: Urine continued...

    The instructions will tell you when to start checking your urine based on the length of your menstrual cycle. Then you'll test for 5 to 7 days. Some kits allow you to test more days.

    Cost: About $17 and up

    Ovulation Test Strips

    These are the simplest and least expensive option. You hold the strip in your urine stream (or in a sterile cup you've filled with urine). Color coding will tell you if you're ovulating.

    Cost: $13-$30

    Digital Ovulation Tests include a digital readout, which can make it easier to see your results.

    • Digital Ovulation Test
      • Costs about $30-$50
      • Detects LH
    • Advanced Digital Ovulation Test
      • Costs about $38 for a 1-month supply and $54 for a 2-month supply.
      • Detects both LH and estrogen to predict your top 2 fertile days, plus another 4 days when you could become pregnant.

    Fertility Monitor. This device stores the information from your monthly urine tests.

    • Detects both LH and estrogen. Some look for levels of another hormone, follicle-stimulating hormone (FSH).
    • Shows you low, high, and peak fertility days, adding another 1 to 5 days of fertility.
    • Stores information about your hormone cycles, so it tells you when to test and when your period is due.
    • Monitor costs about $160; the test sticks you need for the monitor cost about $50 for a pack of 30.


    Ovulation Predictor Kits: Saliva

    This product looks at the mineral content in your saliva when it dries.

    It comes with a mini microscope you can use to look for a pattern in your saliva. It looks like a fern leaf. When you see it, you’ll ovulate sometime in the next few days.

    • Unlike urine kits, which you use only once, you can use a saliva test over and over.
    • A good option for women who want something simpler than a urine test
    • Cost: about $30

    There are some problems with saliva testing:

    • Not all women will show the fern pattern or can see it.
    • You may not "fern" on all of your fertile days.

    While saliva testing works for some women, it isn’t as good as urine kits. "Of all the options, the only OPKs that have been validated are urine ovulation predictor kits," Schoolcraft says.

    Pregnancy Week-By-Week Newsletter

    Delivered right to your inbox, get pictures and facts on
    what to expect each week of your pregnancy.

    Today on WebMD

    hand circling date on calendar
    Track your most fertile days.
    woman looking at ultrasound
    Week-by-week pregnancy guide.
    Pretty pregnant woman timing contaction pains
    The signs to watch out for.
    pregnant woman in hospital
    Are there ways to do it naturally?
    slideshow fetal development
    pregnancy first trimester warning signs
    What Causes Bipolar
    Woman trying on dress in store
    pregnant woman
    Woman looking at pregnancy test
    calendar and baby buggy
    dark chocolate squares