I'm pretty sure the digitals are one use only.
They're just really easy to read...you get a smiley face on your bd days!!!
They do cost quite a bit more...
Speaking of a test you can use more than once...
There's also a saliva test.
It's a microscope you can use every morning...just make sure you do it before you drink anything or brush your teeth.
It seems that estrogen causes salts to build up in your saliva.
As you get closer to ovulation you see different patterns...from big spots to some really cool ferning!!!
Good luck y'all!!!
D
I just noticed you were asking about digital pregnancy tests...
I'm on an OPK mentality!!!
They do measure a higher level of HCG
Again, these are more expensive...but you don't have to worry about whether that second line is real or not...
You get the words "pregnant" or "not pregnant"!!!
Sorry for the confusion!!!
Dawna