Skip to content
My WebMD Sign In, Sign Up

Health & Pregnancy

Font Size

Your Best Days for Making a Baby

Ovulation Predictor Kits: Saliva

This type of kit 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 that resembles a fern leaf. This pattern means you will ovulate sometime in the next several days.
  • Unlike urine tests, which are disposable, this type of test can be used 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, they aren't as effective as urine kits. "Of all the options, the only OPKs that have been validated are urine ovulation predictor kits," Schoolcraft says.

How Long to Test?

"If you're under 36, it would be OK to try for up to a year," Schoolcraft says. "After 35, typically specialists recommend just trying for 6 months." After that time, if you've been doing everything right and still haven't conceived, it's a good idea to see a fertility doctor.

1|2
Reviewed on March 29, 2013

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
Slideshow
pregnancy first trimester warning signs
Article
 
What Causes Bipolar
Video
Woman trying on dress in store
Slideshow
 
pregnant woman
Article
Close up on eyes of baby breastfeeding
Video
 
healthtool pregnancy calendar
Tool
eddleman prepare your body pregnancy
Video